The price p, in dollars, of a certain product and the quantity x sold obey the demand equation Suppose that the cost C, in dollars, of producing x units is Assuming that all items produced are sold, find the cost C as a function of the price p. [Hint: Solve for x in the demand equation and then form the composite.]

MATH121 Chapter 7 Notes Lesson 7.1 – Exponential Functions and their Graphs EXAMPLE 1. x 16 – 4 = 0 (First, we need to get the nomial with the exponent on a side by itself, so add 4 to both sides.) x 6 = 4 (Now, we need to get both numbers with the same base so we can set the exponents equal to one another. 16 is the same as 2 . 4 is the same as 2 .) 4x