A plumber charges $30 for a service call and an additional $25 per hour. Write an equation in slope-intercept form to represent the cost of service, C, for h hours of service. Then find the cost if the plumber worked 7 hours on a project.

Answers

Answer 1

Answer:

The equation is c=25h+30 and the answer is 205

Step-by-step explanation:

Plug in 7 for h.


Related Questions

sin^2x + sin x = 0
Find all solutions to the equation

Answers

Factor out sin x
Sin x (sinx +1) = 0
Use the zero product property
Sin x=0
Sin x+1 = 0

Solutions
x= 0 degrees
x= 270 or -90 degrees

what does this graph represent....LINEAR FUNCTION, EXPONENTIAL FUNCTION, OR (neither)

Answers

Answer:

LINEAR function  constant slope = 2

Step-by-step explanation:

We see points  (-3, -11),  (-2, -9),  (-1, -7),  (1, -3) , (2, -1)

slope:   m = (-9 - -11)/(-2 - -3) = 2/1

m = (-7 - -9)/(-1 - -2) = 2/1

m = (-3 - - 7)/(1 - -1) = 4/2 = 2

m = (-1 - -3)/(2 - 1) = 2/1 = 2

If you help me get this right i will mark u as most brilliance!

Answers

Answer:

f(0) = -2

f(4) = -14

f(-1) = 1

Step-by-step explanation:

f(x) = -3x-2

f(0)  means let x=0

f(0) = -3(0) -2

    = 0-2

   = -2

f(4) means let x =4

f(4) = -3(4) -2

     = -12 -2

     = -14

f(-1) means let x =-1

f(-1) = -3(-1) -2

     = 3 -2

     = 1

Answer:

f(0) = -2

f(4) = -14

f(-1) = 1

Step-by-step explanation:

To find each answer, you substitute the number in the parentheses for x.

-3(-0) - 2 = -2

-3(4) - 2 = -14

-3(-1) - 2 = 1

what is the area of a regular octagon with apothem 2.5 centimeters?

This is for geometry.

Answers

Mutiply that by the sides

Multiply that by sides and there

Which statements about the ellipse are true? Check all that apply.

The center is located at (2, –1).

The major axis is 8 units long.

The minor axis is 3 units long.

The vertices are 4 units above and below the center.

The foci are √ 7 units above and below the center.

The foci are located along a horizontal line.

Answers

Answer:

1,2,4,5

Step-by-step explanation:

Answer:

1, 2, 4, and 5

Step-by-step explanation:

just did the work

- Alisha had 3/4 yards of ribbon. She wanted to use it to decorate
three picture frames. If she uses one-third of the ribbon on each
frame, how many yards of ribbon will she use for one frame?​

Answers

Answer:

1/4 yards

Step-by-step explanation:

3/4 is the total. Divide the total by 3 to get the answer.

Find the midpoint of A and B where A has coordinates (2,4) and B has coordinates (-3,-9)

Answers

(2+-3/2),(4+-9/2) =
(-1/2,-5/2)

What is 7-5 pls help

Answers

Answer: The answer is 2 :)

Step-by-step explanation:

Answer:

778

Step-by-step explanation:

If you were on the moon, your weight would only be 0.17 of your weight on Earth. If you weigh 195.75 pounds on Earth, how much would you weigh on the moon?

Answers

Answer:

32.49

Step-by-step explanation:

The weight of the person on the moon is 33.2775 pounds.

Given that, if you were on the moon, your weight would only be 0.17 of your weight on Earth.

What is the unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Here, weight on earth is 195.75 pounds

Now, weight on the moon

= 0.17×195.75

= 33.2775 pounds

Hence, the weight of the person on the moon is 33.2775 pounds.

To learn more about the unitary method visit:

brainly.com/question/22056199.

#SPJ5

Can some one help me please with this questions

Answers

20 x + 15 = 10

20 x = - 5

x = -5/20 = -1/4

Answer: -1/4

5x - 5 = 15

5x = 20

x = 20/5 = 4

Answer: 4

n + 14 = 72

Answer: 14 + n = 72, first choice





What is the area of the right triangle

Answers

Answer:

3.75

Step-by-step explanation:

2.5*1.5=3.75

Which of the following graphs has a slope of
-5 and a y-intercept of 4?

Answers

Answer: B.

Step-by-step explanation:

I hope this helps!

The weather report stated there is a chance of 2/3 rain on Friday. It is more likely to rain on Saturday than on Friday, but not certain. What is a possible probability of rain on Saturday?

Answers

3/4 chance of rain for saturday

Answer:

3/4 chance of rain for saturday

Step-by-step explanation:

I need some help with middle school math

Answers

Answer:

1/8

Step-by-step explain i think it;s your answer

Answer:

24

Step-by-step explanation:

h(t)= -16t^2 + 87t. find the average rate of change of the height of the ball from 2 to 4.5 seconds​

Answers

Answer:

  -17 ft/s

Step-by-step explanation:

The average rate of change is the difference in height on the interval, divided by the difference in time.

  m = (h(4.5) -h(2))/(4.5 -2) . . . . . . . . definition of rate of change on [2, 4.5]

  h(4.5) = (-16·4.5 +87)(4.5) = 67.5

  h(2) = (-16·2 +87)(2) = 110

Then ...

  m = (67.5 -110)/(2.5) = -17

The average rate of change on the interval from 2 to 4.5 seconds is -17 ft/s.

_____

Check

The slope of the curve is given by its derivative:

  h'(t) = -32t +87

The midpoint of the interval is (2+4.5)/2 = 3.25.

The slope at the midpoint is ...

  h'(3.25) = -32(3.25) +87 = -17 . . . . average rate of change on [2, 4.5]

For a quadratic function. the average rate of change on an interval is the slope of the function at the midpoint of the interval. This calculation confirms that.

Final answer:

The average rate of change of the height of a ball described by the function h(t) = -16t^2 + 87t from 2 to 4.5 seconds is calculated using the difference in height values at these points divided by the difference in time, resulting in -17 feet/second.

Explanation:

The student asks to find the average rate of change of the height of a ball, given the function h(t) = -16t2 + 87t, from t = 2 seconds to t = 4.5 seconds. To find the average rate of change, we will use the following formula:

Average Rate of Change = (h(t2) - h(t1)) / (t2 - t1)

First, we calculate h(2) and h(4.5):

h(2) = -16(2)2 + 87(2) = -64 + 174 = 110

h(4.5) = -16(4.5)2 + 87(4.5) = -324 + 391.5 = 67.5

Plugging these values into the formula:

Average Rate of Change = (67.5 - 110) / (4.5 - 2) = -42.5 / 2.5 = -17

The average rate of change of the height of the ball from 2 to 4.5 seconds is -17 feet/second.

anyone know this ?! help pls asap

Answers

(-7)² ➡️ 49

(⅔)² ➡️ ⁴/6

- /100 ➡️ -10

/.81 ➡️ .9

Find the solution set of the inequality −4x+35>2

Answers

Answer:

x < 37/4

Step-by-step explanation:

−4x+35>2

Subtract 35 from each side

−4x+35-35>2-35

-4x > -37

Divide each side by -4. remembering to flip the inequality

-4x/-4 < -37/-4

x < 37/4

A random survey shows that 14 out of 21 students plan to vote for Jacob for class president. Which is the best prediction of the total number of votes Jacob will receive if 180 students vote?
A.35
B.90
C.120
D.173

Answers

Answer:

C. 120 Votes

Step-by-step explanation:

14/21 will get you 66.6. Taking that number and multiplying it by the 180 total students will end you with 120 which is your answer.

What is the area of the shaded region?
21 m
23 m
10 m
34 m

Answers

Answer:

572

Step-by-step explanation:

Answer:

572 m

Step-by-step explanation:

step 1: find area of big box

23 m x 34 m = 782 m

step 2: find area of small box

21 m x 10 m = 210 m

step 3: subtract small box area from big box area to get shaded region

782 m - 210 m = 572 m

What is the value of p in the equation of 2(3p -4) = 10

Answers

Answer:

p=3

Step-by-step explanation:

2(3p -4) = 10

6p-8=10 (distribute the 2)

6p=18 (add 8 to both sides)

p=3 (divide 3 from both sides)

Answer:

p = 3

Step-by-step explanation:

2 • (3p - 4) -  10  = 0

Jasmine invests $1500 in an account that earns an interest rate of 4% compounded
continuously. How much money will she have in 4 years? (round to the hundredth place)

Answers

Answer:

After 4 years she will have $1760.67 in her account.

Step-by-step explanation:

Jasmine invested initial amount = $1500

Rate of interest = 4% compounded continuously

Duration of investment = 4 years

Formula to calculate the final amount when compounded continuously is,

[tex]P(t)=Ie^{rt}[/tex]

where I = Initial amount

r = rate of interest

t = duration of investment

P(t) = Final amount

[tex]P(4)=1500e^{0.04(4)}[/tex]

        = [tex]1500e^{0.16}[/tex]

        = 1760.266

        ≈ $1760.27

Therefore, after 4 years she will have $1760.67 in her account.

Final answer:

To calculate the amount of money Jasmine will have in 4 years with a 4% continuous interest rate, use the formula A = P * e^(rt), where A is the final amount, P is the principal, e is Euler's number, r is the interest rate, and t is the time in years. Evaluating the expression, the result is approximately $1657.29.

Explanation:

To calculate the amount of money Jasmine will have in 4 years, we can use the formula for compound interest. The formula is: A = P * e^(rt), where A is the final amount, P is the principal (initial investment), e is Euler's number (approximately 2.718), r is the interest rate, and t is the time in years. In this case, Jasmine invests $1500 at an interest rate of 4% compounded continuously, so we have A = 1500 * e^(0.04*4). Evaluating this expression, we find that Jasmine will have approximately $1657.29 in 4 years.

What is Pythagorean Therom and how is it used?

Answers

Answer:

The Pythagorean Theorem in a^2 + b ^2 = c^2

It is used to solve for one side of a right triangle (any triangle where one angle is 90 degrees). Most of the times it is used to solve for the hypotenuse, which is represented by c. A and B represent the other sides of the triangle.

The Pythagorean Theorem also states that the sum of the squares of the lengths of the legs of a right triangle is equal to the square of the length of the hypotenuse.

In other words, for the triangle shown below, a² + b² = c².

In the image below, I have drawn a triangle on my whiteboard.

In the triangle that is shown below, the legs, a and b, are the perpendicular sides of the right triangle and the hypotenuse, c, is the side opposite the right angle.

This only applies to right triangles!

You can use this theorem to find out if a triangle is an acute triangle, a right triangle, or even an obtuse triangle.

Suggest a universal set for the sets given below:
{ odd number less than 8 }, {prime number less than 8} and {even number between 3 and 8}

Answers

Step-by-step explanation:

A = ( 1 3 5 7) B = (2 3 5 7) C = (4 6)

U = ( 1 2 3 4 5 6 7)

The diameter of a circle is 16 meters. What is the angle measure of an arc bounding a sector with an area eight pi square meters? (give the exact answer in simplest form)

Answers

Answer: 45°

Step-by-step explanation:

Diameter= 16m

Radius= 16/2 = 8m

The area of the circle= πr^2

= π8^2

= 64π square metres.

An area of 8π square metres is also 1/8 of the total area, therefore the arc must be 1/8 of the circumference.

The circumference = 2πr = 16π,

This gives us an arc length of 2π metres.

But since we are looking for the the angle.

In degrees: 360/8 = 45°

The angle of the sector is 45 degrees.

To understand the calculations, check below

Sector of circle:

The radius of circle is [tex]\frac{16}{2} =8cm[/tex]

The area of circle is,

                 [tex]Area=\pi*8^{2} \\\\Area=64 \pi[/tex]

Area of sector [tex]=8\pi[/tex]

Angle of sector,

                       [tex]=\frac{8\pi}{64\pi} *360\\\\=\frac{360}{8}=45 degrees[/tex]

The angle of sector is 45 degrees.

Learn more about the sector angle here:

https://brainly.com/question/22972014

Which value of x is the solution of: 5x - 1 = 2x + 20?

A) 19/7
B) 19/3
C) 3
D) 4

Answers

Answer:the correct answer is 7

Step-by-step explanation:

Which answer represents the range of the logarithmic function given below? f(x) = log0.3 x

Answers

Domain of the function F(x) = log 0.3 x is :

All Real Numbers greater than zero.

So the right answer is :

D. All real numbers

Answer:All real numbers

Step-by-step explanation:

A

P

E

X


Explain the difference between the superlative and comparative degree.

Answers

Answer:

The superlative degree compares more than two things to show which has the least or greatest degree of the quality.comparative degree is  used when just comparing two things.

Step-by-step explanation:

Final answer:

The comparative degree is used to compare two items, while the superlative degree is used to compare three or more. Comparatives typically end in -er, while superlatives end in -est, except in cases of adjectives with more syllables where 'more' and 'most' are used respectively. Absolute adjectives generally do not have comparative or superlative forms.

Explanation:

Difference Between the Comparative and Superlative Degree

The comparative and superlative degrees are used to make comparisons between nouns based on some attributes described by adjectives or adverbs. The comparative degree is used when comparing two items, while the superlative degree is used when comparing three or more items. Comparative adjectives often end in -er, and superlative adjectives often end in -est. For example, the adjective 'hot' becomes 'hotter' in the comparative form and 'hottest' in the superlative form.

For adjectives of three or more syllables, and some two-syllable adjectives, the comparative is formed by adding the word 'more' before the adjective, and the superlative is formed with 'most'. For instance, 'famous' becomes 'more famous' and 'most famous' in comparative and superlative forms respectively. Some adjectives and adverbs are irregular and do not follow these standard patterns of formation. Furthermore, adjectives that describe absolute qualities, such as 'dead' or 'pregnant', typically do not have comparative or superlative forms.

It is important to never use both types of comparison for the same adjective, as in 'most hardest'. The correct form would be 'hardest', without the 'most'. Also, it's useful to know that adjectives imply a scale of degrees, and comparative forms indicate one item's position on that scale in relation to another, while superlatives indicate the extreme ends of that scale.

Which types of graphs are most appropriate for displaying categorical data? Check all of the boxes that apply. bar graphs histograms pie charts or circle graphs stem-and-leaf plots

Answers

Answer: Bar graphs, pie charts or circle graphs

Step-by-step explanation: for it right

Pie charts or circle graphs and bar charts are the most appropriate displaying for categorical variables.

What is a graph?

A graph is used to provide a pictorial representation or diagram so as to represents data in an orderly way. Examples of graphs are histogram, box plot, pie chart, dot plot.

Pie charts or circle graphs and bar charts are the most appropriate displaying for categorical variables.

Find out more on graph at: brainly.com/question/14323743

Four rulers and three pencils cost £2.15
Three rulers and four pencils cost £2.05
Work out the cost of a ruler and the cost of a pencil.

Answers

Answer:

is it 10 cents lesser

Step-by-step explanation:

10 cents less. Hope this helped!

What is the measure of θ in radians?
In the diagram, θ is a central angle.

Answers

Answer:

5

Step-by-step explanation:

Arc length = r × theta

15 = 3 × theta

theta = 15/3

theta = 5 radians

5

Answer:

Step-by-step explanation:

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Why did the United States adopt a interventionist role in global politics? Read the sentence. Which part of a narrative is the author writing? You should know that you can still find small-town values in a big city if you know where and how to look. From the deck behind his house, Mike Cooke can watch the sun set behind his favorite holes at the Onion Creek Club golf course. Lately, he's been wondering if he'll ever get to play golf on his favorite part of the course again. Heavy rains in November damaged the golf course badly. Officials at the public golf club have let it be known that the damaged holes might not be rebuilt because it will cost so much. Many of the club members are not at all happy about that. Some of the 625 playing members, including Mike Cooke, are thinking about pooling their talents to help the club. They do not want to lose a chance to play the same holes on the same golf course that they've enjoyed for so many years. 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The surface area of the remaining cheese after the wedge is removed is about square inches. Question 2 Did the surface area increase, decrease, or remain the same? Response - correct The surface area decreased. The three types of muscle differ in whether they contract slowly, are striated, and are under voluntary or involuntarycontrol. Students in a class listed this information in the table shown here. Which student listed the information correctly? 8^1/6 x2^x=32^1/2 work out the exact value of x Biotechnology uses a procedure called genetic engineering. Which best describes genetic engineering.a--making artificial DNA in the laboratory from chemicalsb--adding DNA from one organism into the DNA of another organismc--cutting out pieces of DNA from an organism under a microscoped--replacing DNA in one organism with DNA from another organism In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 37 h . During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.45 in and each refueling took 2.45 min to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle. A disease is spreading throughout a community of 3,000 people at a rate (measured in number infected per day) proportional to the product of number of people infected and the number of people not yet infected, with constant of proportionality k = 0.004. Initially, 500 people are infected. Write an initial value problem. 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