Question 149129
$150 for a 3 hr job. $180 for a 6 hr. job.  


Jobs differ by three hours and thirty dollars, so ten dollars an hour.


Base price=price for three hours minus ten per hour
Base price=150-10(3)
150-30
Base price=120


10 dollars an hour, so total price=
base price plus price per hour times the hours


total price of nine hours=
120+10(9)
120+90
210


Price for nine hours:
$210