A electrician charges $50 for the first half-hour of work and $30 each hour for additional time. Stoney Point High School budgeted $200 to repair the refrigeration system. What length of service call with the budget not be exceeded?

2 answers

50(.5x) + 30x < 200

Solve for x.
Revised answer:

Subtract the cost of the first half hour from the total leaving you 150 for the remaining hours.

30x < 150

x < 5

However, now you need to add back in the extra half hour, so the length of the call cannot exceed 5.5 hours.