If p is the price in dollars and q is quantity, demand for a product is given by:
q=5000e^(-0.09p)

Round your answer to the nearest integer.

1. The revenue at the price of $20 is ______
2. The derivative of revenue in respect to price at the price of $20 is _____

Question

If p is the price in dollars and q is quantity, demand for a product is given by:
q=5000e^(-0.09p)

Round your answer to the nearest integer. 

1. The revenue at the price of $20 is ______
2. The derivative of revenue in respect to price at the price of $20 is _____

anonymous · Answer

Well, I figured out the derivative of the above equation is -450e^-(0.09p). 

But for some reason I'm not getting the answer right. 
I tried 826 for (1) and -74 for (2). 
I'm guessing you can't plug in $20 into p? Because that's what I was doing.