Some information is missing. The logical assumption is that you forgot to write that the rate for the hours worked over 8 hours is 50% more than the regular rate or, what is the same 1.5 times.
With that this is the solution step by step:
1) Number of hours worked: x
2) Rate for the first 8 hours: $10 per hour
2) Pay for the first 8 hours = $10 * 8 = $80
3) Number of hours worked over 8 hours = x - 8
4) Rate for the hours worked over 8: 1.5 times $10 per hour = $15 per hour
5) Pay for the hours worked over 8 = $15 (x - 8) = 15 (x - 8)
6) Total pay = 80 + 15 (x - 8)
That is the option C.
Answer: option C. 80 + 15(x - 8)
