Correct answer to the question is letter b
It would take him 7.5 hours to do it himself
Is there more to this question?
The y intercept would be (0,2)
and the x intercept would be (4,0)
the number in front of x in the equation y=mx+b is the way you move, rise over run, put it over one in the case y=0.5/1x+2 so you rise .5 and go the right 1