Suppose that the revenues function of a certain product in function of the thousands of units sold yearly (x) is: R(x)=−x 2
+10x−3 And the function of costs is: C(x)=x 3
−3x 2
−x+12 a) What is the function of profits? (10 points) b) Is there a sales level that maximizes profit? If so, what are the points of maximum profit? (10 points)