Question 3 Answer & Explanation - SAT Algebra

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algebra

Solve: $2(x + 4) = x + 9$

Correct Answer: B

Choice Ahoice C is the correct answer.

Distribute: $2x + 8 = x + 9$
Subtract x: $x + 8 = 9$
Subtract 8: $x = 1$
Verify: $2(5) = 10$ and $1 + 9 = 10$ ✓

Choice Ahoice C is incorrect because calculation error.

Choice Ahoice B is incorrect because calculation error.

Choice Ahoice D is incorrect because calculation error.

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Linear Functions Set 19

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