If 3x + 2 = 11 , what is the value of 2x - 1 ?
(A) 1 (B) 2 (C) 3 (D) 4 (E) 5
Explanations from SATpreparation.net
STRATEGY: Read the question two or three times to be
sure you understand what it says.
Solve:
STRATEGY: Write all the steps to avoid careless errors.
Solve for x : 3x + 2 = 11
First, subtract 2 from both sides: 3x = 9
Then, divide both sides by 3: x = 3
Answer:
STRATEGY: Read the question again to be sure
you know what it asks.
SAT TIP: This question, like many, leads you to solve for
one answer, but it has another step.
The question asks for the value of 2 x - 1
2 (3) - 1 .
6 - 1 = 5
The answer is 5.
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