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Sergeeva-Olga [200]

3 years ago

14

A plumber charges $45 for a service call to come to your house and $18 an hour while he is working. Write a function that shows

what the plumber charges for repairs. Is this function linear?

1 answer:

Brilliant_brown [7]3 years ago

6 0

Answer:

This relationship can be represented by a linear equation

$y=18x+45$

Step-by-step explanation:

$y=18x+45$

Where x is time in hours

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Paul baked 56 blueberry muffins. His brother Pete ate 7 muffins and his father William ate 5 muffins. Which expression can Paul

Natasha_Volkova [10]

Answer: 56-(7+5)

Step-by-step explanation:

You can find the amount of muffins left over by adding up the amount of muffins that were eaten and subtracting them from the original amount of blueberry muffins, so the answer is 56-(7+5).

(7+5 is in parentheses because if not, you would have 56-7+5 and get 54).

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3 years ago

Harlamova29_29 [7]

Step-by-step explanation:

1. -9x - 3 - 3 + 2x

-7x - 6

3. 3 - 4x - 7x - 2

-11x - 1

4. 5x - 1 + 3 + 2x

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3 years ago

A number a decreased by 7 is 2.

umka21 [38]

Answer:

9

Step-by-step explanation:

Let's first convert this to numbers. When a number is decreased by a certain amount, that is the same as saying that something is subtracted from it. Therefore:

a-7=2

Add 7 to both sides:

a-7+7=2+7

a=9

Hope this helps!

7 0

3 years ago

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Use a calculator to find the r-value of these data. Round the value to three decimal places.

Sindrei [870]

Answer:

-0.985

Step-by-step explanation:

Refer to the image below for explanation:

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2 years ago

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Find the midpoint of a line segment with endpoints (4, -10) and (-8, 2).

pychu [463]

Step-by-step explanation: (-2,-4)

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3 years ago