Pierce Manufacturing determines that the daily revenue in dollars from the sale of x lawn chairs is R x 0 004x 0 a What is the current daily revenue b How much would revenue increase if 75 lawn chairs were sold each day 0 05x 0 5x Currently Pierce sells 70 lawn chairs daily c What is the marginal revenue when 70 lawn chairs are sold daily d Use the answer from part c to estimate R 71 R 72 and R 73