2W4 A rm's revenue function from the sale of $21 is R(x) = 2x2 9x 22 1 and the rm's total cost function is given by C(x) = x2 + 4 where x represents the level of demand for 821. i. How many 821 would the rm be required to produce and sell to record total revenue of zero? 9 ii, Write an algebraic expression to represent the prot function for the 1rm