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Dmitrij [34]
3 years ago
10

If barbara used the washer for 3 hours and her brother returned it to the store 7 hours after she rented it how much does her br

other owe her

Mathematics
2 answers:
Sauron [17]3 years ago
6 0

Answer:

4/7 of the cost

Step-by-step explanation:

7 - 3 = 4

Brother owes: 4/7 of the cost

mario62 [17]3 years ago
3 0

Answer:

a. $15.00

Step-by-step explanation:

okay so the complete question is

After a heavy rainstorm, Barbara’s dog left muddy paw prints all over her back patio. She decided to rent an electric pressure washer to clean up the mess. The piece wise function below shows the rental charges for the pressure washer, dependent upon how many hours she rents it. Due to high demand, you cannot rent the washer for more than 24 hours at a time. Barbara’s brother asked to use the washer and agreed to pay Barbara for any additional monies owed.

(See attached picture)

If Barbara used the washer for 3 hours and her brother returned it to the store 7 hours after she rented it, how much does her brother owe her?

$15.00

$41.00

$60.00

$61.00

Since Barb and her bro used it for 7 hours total, we'll be using the second function, or 26 = 5(h-4)

plug 7 in for h and solve and you'll get

41

subtract 26 (got that from the first function) from 41 and you'll get your answer:

$15.00

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