What is the value of
\dfrac{2 a^{-1}+\dfrac{a^{-1}}{2}}{a}
when a=\dfrac{1}{2} ?
Answer Choices
A. 1
B. 2
C. \dfrac{5}{2}
D. 10
E. 20
What is the value of
\dfrac{2 a^{-1}+\dfrac{a^{-1}}{2}}{a}
when a=\dfrac{1}{2} ?
Answer Choices
A. 1
B. 2
C. \dfrac{5}{2}
D. 10
E. 20