Julianna Andersen

Mathematics

29 April, 15:04

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 total 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

+1

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