Question

a repair technician charges $80 for the First thirty minutes of each house call plus $2 for each additional minute. the repair technician charged a total od $170 for a job how many minutes did the repair technican work

Answer 1

Okay so you know the equation y=2x+80

And you know y=170 so you solve

170=2x+80

And you get y=55

Answer 2

75 I think but I may be wrong

80= the first 30 minutes

2x for every other minute so,

80+2x=170

-80= 2x=90

/2=45                               Add the first 30 minutes from the 80 and you get 75