GMAT Practice Question Set #10 (Question 28-30)

Problem Solving Question #28: Algebraic Expression with Exponents
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 If x is a positive integer such that 4*2^(x+2.5) = sqrt {2} * 0.5^(-3*x) What is the value of x^3 ? (A) 2 (B) 3 (C) 5 (D) 7 (E) 8
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