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Sergeeva-Olga [200]
3 years ago
6

A service call to repair a washing machine costs $35 plus $20 per hour. Raphael ‘s machine took 2 hour to fix. How much did the

repair cost ?
F. $50.00. G. $55.00. H. $65.00
I. $75.00
Mathematics
2 answers:
Lady bird [3.3K]3 years ago
5 0

There is a mandatory fixed rate of $ 35 that Raphael will have to pay once the service call has been made. This fixed rate is the constant.

The per hour rate is $20. Suppose the machine took "x" hours to get fixed. Then the variable part of the repair cost will be 20x.

Thus, Repair Cost=Fixed Rate Cost+Variable Cost

Or, y=35+20x where y is the total repair cost. Thus, if Raphael ‘s machine took 2 hour to fix, the repair cost is:

y=35+20\times 2=35+40=75 dollars.

Therefore, the last option is the correct option.

I am Lyosha [343]3 years ago
5 0
I. $75

Your equation would be 35 + 20x

X is the amount of hours it was fixed

35 + 20 x 2
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