Question 4 Answer & Explanation - SAT Algebra

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algebra

A number is doubled, then 5 is subtracted, result is 15. What is the number?

7.5

Correct Answer: A

Choice Choice B is the correct answer.

Equation: $2x - 5 = 15$
Add 5: $2x = 20$
Divide by 2: $x = 10$

Choice Choice D is incorrect because calculation error.

Choice Choice B is incorrect because calculation error.

Choice Choice C is incorrect because calculation error.

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Linear Functions Set 34

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