A student started a lawn mower business. He bought a lawn mower for $ 645. He decided to hire a friend at $7.00 per hour to operate the lawn mower while he knocked on doors to drum up business. It costs $4.00 hour to run the lawn mower with gas and oil. The student charges $20.00 an hour for mowing the lawn. How many hours must the lawn mower be operated before the student breaks even.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Q4. A student started a lawn mower business. He bought a lawn mower for $ 645. He decided to hire a friend at
$7.00 per hour to operate the lawn mower while he knocked on doors to drum up business. It costs $4.00
hour to run the lawn mower with gas and oil. The student charges $20.00 an hour for mowing the lawn.
How many hours must the lawn mower be operated before the student breaks even.
Transcribed Image Text:Q4. A student started a lawn mower business. He bought a lawn mower for $ 645. He decided to hire a friend at $7.00 per hour to operate the lawn mower while he knocked on doors to drum up business. It costs $4.00 hour to run the lawn mower with gas and oil. The student charges $20.00 an hour for mowing the lawn. How many hours must the lawn mower be operated before the student breaks even.
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