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Single Variable Calculus

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Marginal Cost: Guitar Amps

SVCALC-HNSPEX

The cost to produce $x$ guitar amps is

$$C(x)=700-20x-.09x^2+.001x^3$$

What is the marginal cost when producing $350$ amps?

A

$\$367.50$

B

$\$91.00$

C

$\$285.46$

D

$\$284.50$