When considering the normal power demand as reported by a utility company, the power demand at midnight is 1040 MW. During the f
irst five hours, the power demand rises to 1600 MW, and at the eight-hour mark, the power demand rises to 1960 MW. What is the average rate of change of the power demand with respect to time for the period from 5 hours to 8 hours after midnight? 360 MW 282.5 MW/hour 120 MW/hour 1780 MW/hour None of these
This is just substitution. so 3(2(3)-4(1/2)+3(-2/3)= 3(6-2-2)= 3(2) = 6. Basically you plug in the values they gave you for the variables and then just solve one step at a time
