Try another version of this question Get help: Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172 Box 2: Select the best answer
Find the rate of change of total profit, in dollars, with respect to time where `R(x) = x` and `C(x) = 0.01x^2+0.5x+70`, when `x=21` and `frac(dx)(dt)=10`.
Enter DNE for Does Not Exist, oo for Infinity 0.80
dollars per day