Manuel2019
13.07.2019 •
Mathematics
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
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Ответ:
Ответ:
is B
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