Each scenario gives some information about price elasticity of demand. for each, calculate the missing data, and determine if the price change under consideration will increase, decrease, or not change the firm's total revenue. honest abe's used cars estimates the price elasticity of demand for their cars to be −2.1−2.1 . last month, abe tried a new marketing scheme which decreased the number of cars sold by 8787 %. abe must have decreased his prices by %% . abe's total revenue at webs-r-us, a website design company, the new manager has decided to increase the price of webs-r-us services by %. she estimates that webs-r-us has a price elasticity of demand at −0.30−0.30 . the manager expects the number of websites designed to by %% and total revenue to