Let C(x) be the cost to produce x widgets, and let R(x) be the revenue.

Let​ C(x) be the cost to produce x​ widgets, and let​ R(x) be the revenue.

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(a​) graph both​ functions

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(b​) find the minimum​ break-even quantity

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(c​) find the maximum​ revenue

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(d​) find the maximum profit

R(x) = -x2 + 8x, C(x) = 4x + 3