Question 4 Answer & Explanation - SAT Algebra

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algebra

Solve for $r$ : $C = 2\pi r$

r = C / (2\pi)

r = 2\pi C

r = 2\pi / C

r = C - 2\pi

Correct Answer: A

Choice Ahoice C is the correct answer.

Start: $C = 2\pi r$
Divide by $2\pi$ : $r = \frac{C}{2\pi}$

Choice Ahoice D is incorrect because multiplied instead of divided.

Choice Ahoice D is incorrect because subtracted instead of divided.

Choice Ahoice C is incorrect because inverted.

Question 5 →

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Linear Functions Set 36

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