SOLUTION: Given the following revenue and cost functions, find the x-value that makes profit a maximum. (Re2all that profit equals revenue minus cost.) R(x) = 55x - 2x^2; C(x) = 21x + 98

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Given the following revenue and cost functions, find the x-value that makes profit a maximum. (Re2all that profit equals revenue minus cost.) R(x) = 55x - 2x^2; C(x) = 21x + 98      Log On


   

Question 613262: Given the following revenue and cost functions, find the x-value that
makes profit a maximum. (Re2all that profit equals revenue minus cost.)
R(x) = 55x - 2x^2; C(x) = 21x + 98
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

R(x) = 55x - 2x^2 

C(x) = 21x + 98

P(x) = 55x - 2x^2 -(21x + 98)

P(x) = -2x^2 + 34x - 98

  x = 8.5 makes max profit