SOLUTION: If the revenue function for selling q widgets is r(q) =q.(4187-5q) dollars, find the marginal revenue function, and find the marginal revenue when q=135 MR=R'(q)= ? R'(135) =?

Algebra ->  Finance -> SOLUTION: If the revenue function for selling q widgets is r(q) =q.(4187-5q) dollars, find the marginal revenue function, and find the marginal revenue when q=135 MR=R'(q)= ? R'(135) =?       Log On


   



Question 1151421: If the revenue function for selling q widgets is r(q) =q.(4187-5q) dollars, find the marginal revenue function, and find the marginal revenue when q=135
MR=R'(q)= ?
R'(135) =?

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
If the revenue function for selling q widgets is
r%28q%29+=q%284187-5q%29 dollars,
find the marginal+revenue function, and find the marginal revenue when q=135:
we can find marginal revenue by finding the derivative of
r%28q%29+=q%284187-5q%29
r%28q%29+=4187q-5q%5E2
derivative is:
R'%28q%29+=4187-2%2A5q
MR=R'%28q%29=++4187+-10q
then
R'%28135%29+=4187+-10+%2A135=4187-1350=2837