9. a company’s marginal cost function is where x is the number of units. find the total cost of producing units 144 to 625.

36 is the final answer! : )

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

step-by-step explanation:

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i think the answer is b x = 1, y = 35/2