Amanufacturing unit currently operates at 80 percent of its capacity. the profit function for the unit at the optimum output, x, is given by p(x) = -0.1x^2 + 80x − 60. if the function f(x) models the current capacity of the unit, the composite function giving the unit's current profit function is a. f(p(x))=-0.064x^2+6.4x-60 b. p(f(x))=-0.64x^2+0.64x-60 c. p(f(x))=-0.064x^2+64x-60 d. p(f(x))=-0.64x^2+6.4x-60 e. f(p(x))=-0.064x^2+64x-60 if the optimum output is 500 units, the current profit is $ a.15,400 b.15,940 c.16,060 d.16,600