### Home > PC > Chapter 4 > Lesson 4.1.1 > Problem4-10

4-10.

Copy and replace the question mark with the correct number, or state “impossible” and explain why.

1. $\text{log}_3(9) = ?$

It is $2$ because $3^2 = 9$.

1. $\text{log}_3 (\frac { 1 } { 3 }) = ?$

$\scriptsize{\frac{1}{3}=3^{-1}}$

1. $\text{log}_5(625) = ?$

$5^? = 625$

1. $\text{log}_3(0) = ?$

$3^? = 0$

Impossible!

1. $\text{log}_5(?) = 2$

$5^2 = ?$

1. $\text{log}_5(?) =\frac { 1 } { 2 }$

$5^{1/2}=?$