Pierce Manufacturing determines that the daily revenue, in dollars, from the sale of x lawn chairs is R(x) = 0.007x + 0.02x2+ 0.4x. Currently, Pierce sells 50 lawn chairs daily. a) What is the current daily revenue? b) How much would revenue increase if 54 lawn chairs were sold each day? c) What is the marginal revenue when 50 lawn chairs are sold daily? d) Use the answer from part (c) to estimate R(51), R(52), and R(53). a) The current revenue is $ b) The revenue would increase by $ . (Round to the nearest cent.) c) The marginal revenue is $ when 50 lawn chairs are sold daily. d) R(51) ~ $ R(52) ~ $ R(53) ~ $