i need help soon

Question

An electrician charges $75 as a one-time fee plus an additional $45 per hour. If the total bill is $131.25, how many hours did it take for the electrician to complete the repair?   If he arrived at 9:30 a.m., what time was he finished with the repair?

Answer 1

C = 75 + 45h

131.25 = 75 + 45h

45h = 131.25 - 75 = 56.25

h = 56.25/45 = 1 1/4 hours

he arrived at 9:30 am

add 1 hour and 15 minutes

finish at 10:45 am