SAT Math Multiple Choice Practice Question 440: Answer and Explanation

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Question: 440

2. Which of the following is equivalent to · 6a?

D. 8a2
E. 24a2

Correct Answer: D


D Because there are variables in the answers, try Plugging In! If a = 2, then . Plug a = 2 into the answers to find that only D is 32. Another option is to rewrite the problem as . Reduce before you multiply by dividing the denominator of the first term and the numerator of the second term by 3 to get .

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