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2 years ago

10

A plumber charges an initial amount,x, to make a house call plus an hourly rate,y, for the time he is working.A 1-hour job costs

$90 and a 3-hour job cost $210

1 answer:

Inessa05 [86]2 years ago

5 0

X=$30
y=$60

1 hour job- 60x1=60+30=90
3 hour job-60x3=180+30=210

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