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andreyandreev [35.5K]

3 years ago

15

2

1 answer:

bazaltina [42]3 years ago

3 0

Answer:

7.5 hours

Step-by-step explanation:

y=mx+b, where y is cost and x is hours.

175 = 20x + 25

150 = 20x

7.5 = x

He worked 7.5 hours

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