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3. A mechanic charges $90 for the inspection plus $25 per hour. If the bill was $240, how many hours did he work?
A. 8 hours
B. 7 hours
C. 6 hours
D. 5 hours

3 A mechanic charges 90 for the inspection plus 25 per hour If the bill was 240 how many hours did he work A 8 hours B 7 hours C 6 hours D 5 hours class=

Respuesta :

$90+25x=240
240-90
150/25
The answer is C.6

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