7.1 The marketing department of Acme Inc. has estimated the following demand function for its popular carpet deodorizer, Freshbreeze: Q = 100 - 5p, where Q is the quantity of an 8-ounce box (sold in thousand units) and p the price of an 8-ounce box.

Using Excel, calculate the point price elasticity of demand, ε, for price, p = 1, 2, 3, p , 19. Describe the pattern of price elasticity of demand that you have calculated along the demand curve.