Question

A plumber charges a flat fee of 77$ to visit a home and examine a clogged drain. The plumber charges an additional 24$ per hour spent fixing the drain. The total cost, C (in dollars), for fixing a drain that takes H hours is given by the following.
C=77+24H

Answer the following questions.

(A) what is the total cost for fixing a drain that takes 7 hours?

(B) if the plumber charges a total of 365 $ how long did he take to fix the drain

Answer 1

Answer:

A. 77+24(7)=$245

B. 12 hours.

Step-by-step explanation:

For b, what you need to do is minus 77 from 365. Then divided by 24.

Answer 2

Hi There!

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Part A:

Using the formula c = 77 + 24h we know that 77 is the flat fee and 24 is the amount of money per hour he takes to fixed a clogged drain.

c = 77 + 24(7)

c = 77 + 168

c = $245

The total cost for fixing a drain that takes 7 hours is $245.

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Part B:

So we know that there is a $77 flat fee so you subtract that from the total amount then divide by 24.

365 - 77 = 288

288 / 24 = 12

He took 12 hours to fix the drain.

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Hope This Helps