5) Find the equation of the curve that passes through (1, 3) if its slope is given by dy = 12x2-12x dx (7 m 6) If the marginal cost of producing x units of a commodity is given by C'(x) = 0.5x2 - 3x and the fixed cost is $2,500, find: a) the cost function C(x) and (7 mar b) the cost of producing 20 units. (3 mar