Solve the problem.
-Parts for an automobile repair cost $792. The mechanic charges $33 per hour. If you receive an estimate for at least $957 and at most $1023 for fixing the car, what is the time interval, in hours, that the mechanic will
Be working on the job?
A)[5, 7]
B)[29, 31]
C)[1, 7]
D)[1, 5]

Question

Quizplus · Accepted Answer

The total cost includes parts ($792) and labor ($33 per hour). For a minimum estimate of $957, subtract the parts cost: $957 - $792 = $165. Divide by the hourly rate: $165 / $33 = 5 hours. For a maximum estimate of $1023, subtract the parts cost: $1023 - $792 = $231. Divide by the hourly rate: $231 / $33 = 7 hours. Thus, the time interval is [5, 7] hours.

Solve the Problem. -Parts for an Automobile Repair Cost $792. the Mechanic Charges