The consumer demand equation for tissues is given by a = (97 - 1)? where p is the price per case of tissues and a is the demand In weekly sales. (a) Determine the price elasticity of demand when the price is set at $31. (Round your answer to three decimal places.) E- Interpret your answer The demand is going e per 1% increase in price at that price level (D) At what price should tissues be sold to maximize the revenue? (Round your answer to the nearest cent.) $ (C) Approximately how many cases of tissues would be demanded at that price? (Round your answer to the nearest whole number) cases per week