Answer:
9 hours
Step-by-step explanation:
If he earns 12.50 an hour...
112.50 ÷ 12.50 = 9 hours
MN and OL would both have a slope of 2.
You can find this by finding the slope perpendicular to the slope of LM, which is -1/2.
To find the perpendicular slope, find the negative reciprocal. Reciprocal= 2/-1. Then find the negative of -2/1, which is 2/1 or 2.