SOLUTION: Bill owns a small fast food restaurant. He found that the profit he makes by selling hotdogs is represented by the equation P - -x2 + 56x + 72, with P being profits and x the numbe

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Bill owns a small fast food restaurant. He found that the profit he makes by selling hotdogs is represented by the equation P - -x2 + 56x + 72, with P being profits and x the numbe      Log On


   

Question 640518: Bill owns a small fast food restaurant. He found that the profit he makes by selling hotdogs is represented by the equation P - -x2 + 56x + 72, with P being profits and x the number of hotdogs. How many hotdogs must he sell to maximize his profit?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: He must sell the amount that is represented at the vertex. The x coordinate of the vertex is x = -b/(2a)