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marissa [1.9K]
3 years ago
12

The cost of a plumbing repair is given by the equation y=45x+30, where x is the number of hours the repair takes and y is the to

tal cost in dollars.if a repair costs a total of $300 how manny hours did it take?
Select the correct answer below.

A.6
B.7
C. 7 1/3
D.10
Mathematics
1 answer:
arlik [135]3 years ago
6 0
First you subtract the 30 from 300 and than 270/45 and your answer will be A. 6
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Step-by-step explanation:

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