Question

How do you solve `2^{x+3}=9`?

Answer 1

Use logarithms (any base)

Explanation:

`2^(x+3)=9`
`:. log 2^(x+3)=log 9`
`:. (x+3)log 2=log 9`
`:. x+3=(log 9)/(log 2)`
`:. x=(log 9)/(log 2) -3`