The Student Government Association is making Mother's Day gift baskets to sell at a fund-raiser. If the SGA makes a larger quantity of baskets, it can purchase materials in bulk. The total cost (in hundreds of dollars) of making x gift baskets can be approximated by C(x) =- 6x + 7 X + 60 . Complete parts (a) through (c) below. (a) Find the marginal cost function and the marginal cost at x = 20 and x = 40. 127 The marginal cost function is 1600 The marginal cost at x = 20 is $ 7.94 /basket. (Round to the nearest cent as needed.) The marginal cost at x = 40 is $ 6.18 /basket