Cole's Computer Company charges $50 for a service call to your home to repair your computer system, and he charges $12 per hour, h, for labor for any repair. Cole uses this formula to calculate the total cost, t.
50 + 12h = t
Mr. Greene paid Cole a total of $86 for a repair. How many hours did it take to finish the job?
Group of answer choices
a. 3
b. 7
c. 5
d. 4
