Suppose That the Cost of Manufacturing X Units of a Product

Short Answer

Suppose that the cost of manufacturing x units of a product is C(x) = 6x - 2 $\sqrt { x }$ + 1 dollars and that the production level t weeks from the present is x = 4 $t ^ { 2 }$ . Find the rate of change in cost with respect to time. Enter your answer as a polynomial in t in standard form (not labeled).