from observing the graph between x=-3 and x = 1.5, we can see that the highest most point of the graph (i.e the maximum) value occurs at x=-1.6, y = 56
Hence the maximum y-locatoin is 56
*calories burned = (weight)(calorie factor)*
calories burned = 180 (0.65)
calories burned = 117
the calories he used up is 117, which is 65% of his weight.