a plumer charged x dollars per hour for a 3-hour job plus $125 for parts. the total charge for the service call was $305. which
1 answer:
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Step-by-step explanation:
Let h be the number of hours.
Total Cost = Fixed Costs + Variable Cost
= Initial Fee + Hourly Charge
= 75 + 9h
Given,
Since the car cannot be rent part of an hour, the highest possible whole number is 19 hours.