Baldo is paid $80 per day at his job, plus $15 per hour for every hour (h) that he works overtime. one day, his total earnings were $140. which equation models this problem?

15h + 80 = 140

If you wanted to solve how many hours he worked:
15h + 80 = 140
15h = 60
h = 4. 

Baldo's total earnings is the sum of his basic wage, $80, and the earnings he got from his overtime for h hours. This total should be equal to $140. The equation that represent this is,
                                   80 + 15h = 140
The value of h from this equation is 4.

What’s the equation you are trying to solve to get x?

The answer is 1532.75