Solve.Parts for an automobile repair cost $180. The mechanic charges $30 per hour. If you receive an estimate for at least $360 and at most $450 for fixing the car, what is the time interval that the mechanic will be working on the job? 

A. Between 1 hr and 9 hr
B. Between 12 hr and 15 hr
C. Between 6 hr and 9 hr
D. Between 1 hr and 6 hr


Answer: C

Mathematics

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A. -2
B.
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Mathematics