What is log7(49a) – log10(0.01)?
-
A.
(frac{49^a}{100}) -
B.
(frac{a}{2}) + 2 -
C.
72a + 2 -
D.
2a + 2 -
E.
(frac{2a}{2})
Correct Answer: Option D
Explanation
log7/>(49a) – log10(0.01) = log7/>(72)a – log10100
log7/>72a – log101 – log10 102
= 2a – 2
= 2a + a