Find the rate of change of total reveune, cost, and profit with respect to time. Assume that R(x) and C(x) are in dollars.
R(x)= 60x-0.5x2, C(x) = 5x+15, when x=25 and dx/dt= 20 units per day
The rate of change of total revenue is $_ per day.
The rate of change of total cost is $_ per day.
The rate of change of total profit is $_ per day.