Lib A record club has found that the marginal profit, P'(x), in 40.000 P'(x) = - 0.0008x3 + 0.40x2+ 63.8x rces cents, is given by P'(x) = - 0.0008x + 0.40x + 63.8x for x s 500, where x is the number of members currently 32,000- IS enrolled in the club. Approximate the total profit when 300 24,000- members are enrolled by computing the sum Marginal profit (in cents) 6 16,000- Tool _ P' (x; ) Ax with Ax = 50. 8,000 1 =1 O T V V V 100 200 300 400 500 Number of members . . . The total profit when 300 members are enrolled is approximately $ (Round to the nearest cent as needed.)