Solve log4 x - 1 = 2

Question

Solve log4 x - 1 = 2
Choose one answer.
A. x = 64
B. x = 17
C. x = 4
D. x = 2

Answer 1

log₄(x - 1) = 2

 

Rewrite the log equation in exponential form.  The solution to a log is the exponent and the base number here is 4.

 

 

4²= x - 1

 

16 = x - 1

 

 17 = x    

 

 

Your solution is (B).