Question

Solve: log2(x-4) = 4 A) 4 B) 8 C) 12 D) 20

Answer 1

D) 20

Explanation:

Answer 2

D

Explanation:

using the rule of logarithms

•
`log_(b)` x = n ⇔ x =
`b^(n)`

`log_(2)`(x - 4) = 4

⇒ x - 4 =
`2^(4)` = 16 ( add 4 to both sides )

x = 20 → D