Determine the price elasticity of demand E when the retail price is set at ¥800. E =   Interpret your answer. The demand is going      by   % per 1% increase in price at that price level. Thus, a large price      is advised. (b) At what price will revenue be a maximum?   hundred yen (c) Approximately how many paint-by-number sets will be sold per month at the price in part (b)? (Round your answer to the nearest integer.)   paint-by-number sets per month

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