Question

Solve: log2(x-4) = 4

Answer 1

log2(x-4) =4. The answer is D) 20

Answer 2

D

Explanation:

log₂(x-4) = 4

Undo the log by raising 2 to both sides:

2^(log₂(x-4)) = 2^4

x - 4 = 2^4

x - 4 = 16

x = 20

Answer D.