Question

Stefan’s family rented a rototiller to prepare an area in their backyard for spring planting. The rental company charged an initial fee of $43 with an additional fee per hour. If they paid $64 after renting the rototiller for 7 hours, what was the hourly fee? If h represents the hourly fee, which equation models this problem?

a. h + 43 = 64
b. h = 64 + 43
c. 7h + 43 = 64
d. 7h + 7 = 64

Answer 1

c. 7h + 43 = 64

Explanation:

If h is the hourly fee, then 7h is the fee for renting the equipment 7 hours. That added to the initial fee of $43 gives the total charge of $64.

7h + 43 = 64 . . . . . appropriately models the charges

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The solution is h = (64 -43)/7 = 3. The hourly fee was $3.