SOLUTION: Solve the following for x.You should not use the "ln" or the common log, log base 10, in your answer. A) 5^x=7 B) 9^(x/3)=13 C) 2^(x+4)=3

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Solve the following for x.You should not use the "ln" or the common log, log base 10, in your answer. A) 5^x=7 B) 9^(x/3)=13 C) 2^(x+4)=3      Log On


   

Question 1006757: Solve the following for x.You should not use the "ln" or the common log, log base 10, in your answer.
A) 5^x=7
B) 9^(x/3)=13
C) 2^(x+4)=3
Answer by Edwin McCravy(20066) About Me  (Show Source):
You can put this solution on YOUR website!
You just need to learn that the definition of logarithm is

A=B%5EC is equivalent to C=log%28B%2CA%29

A) 5^x=7
7=5%5Ex is equivalent to x=log%285%2C7%29

B) 9^(x/3)=13
matrix%282%2C1%2C%22%22%2C13=9%5E%28x%2F3%29%29 is equivalent to x%2F3=log%289%2C13%29, or x=3log%289%2C13%29

C) 2^(x+4)=3
3=2%5E%28x%2B4%29 is equivalent to x%2B4=log%282%2C3%29, or x=log%282%2C3%29-4

Edwin