The revenue, cost, and profit functions for a line of cell phone cases is shown. Identify the location on the profit function where the profit from sales of the phone cases is a maximum.
y4
+2,500,000
+2,000,000
R(x)
F1,500,000
C(x)
Total (dollars)
+1,000,000
P(x)
-500,000
10
60
70
20 30 40 50
Price per Phone Case (dollars)