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2016 AMC 10B Problem 1

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2016 AMC 10B Problem 1AMC 10 Step by Step
Name:                             Date: September 13, 2026
Exponents, Logarithms & Radicals · difficulty 1 of 5 · about 1 min · position P1-10

What is the value of 2a−1+a−12a\frac{2a^{-1}+\frac{a^{-1}}{2}}{a} when a=12a= \tfrac{1}{2} ?

  1. A)

    11

  2. B)

    22

  3. C)

    52\frac{5}{2}

  4. D)

    1010

  5. E)

    2020

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