A record club has found that the marginal profit P x in cents is given by P x 0 0008x 0 35x 36 7x for x 400 where x is the number of members currently enrolled in the club Approximate the total profit when 240 members are enrolled by computing the sum 6 P x Ax with Ax 40 i 1 The total profit when 240 members are enrolled is approximately Round to the nearest cent as needed Marginal profit in cents 22 000 17 600 13 200 8 800 4 400 0 0 x 0 0008x 0 35x 36 7x IV V VI 100 200 Number of members 300 400 Q G