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Cost is expressed by the formula \(tb^4.\) If \(b\) is doubled, the new cost is what percent of the original cost?

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by VJesus12 » Wed Oct 07, 2020 7:07 am

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Answers

A

B

C

D

E

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Difficulty—

Cost is expressed by the formula \(tb^4.\) If \(b\) is doubled, the new cost is what percent of the original cost?

(A) 200
(B) 600
(C) 800
(D) 1600
(E) 50

Answer: D

Source: Manhattan GMAT
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