MathDB

6

Part of 1965 AMC 12/AHSME

Problems(1)

Logarithm as Exponent

Source:

1/11/2009
If 10^{\log_{10}9} \equal{} 8x \plus{} 5 then x x equals: (A)\ 0 \qquad (B)\ \frac {1}{2} \qquad (C)\ \frac {5}{8} \qquad (D)\ \frac {9}{8} \qquad (E)\ \frac {2\log_{10}3 \minus{} 5}{8}
logarithms