Change of base - practice

I have to find the approximate solution to the problem  $\log_8\ 13.$  Which of the following would give me the result?

•  $\frac{\log13}{\log\ 8}$  

•  $\frac{\log8}{\log13}$  

•  $\log13-\log8$  

•  $\log8+\log13$  

Use the change of base rule to rewrite this problem:

log₇729

• log(7)/log(729)

• log(729)/log(7)

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

CCSS.HSF.BF.B.5

CCSS.HSF.IF.C.8

Use the change of base rule to rewrite this problem:

log₃64

• log(64)/log(3)

• log(3)/log(64)

Tags

CCSS.HSA.SSE.B.3

CCSS.HSF.BF.B.5

Change $\log_5⁡7$ into the form of $\frac{\log_3⁡a}{\log_3⁡b}$ ,  where  $a$ and $b$ are integers

•  $\frac{\log_3⁡5}{\log_3⁡7}$  

•  $\frac{\log_3⁡7}{\log_3⁡5}$  

Use the change of base rule to rewrite this problem:

log₅75

• log(75)/log(5)

• log(5)/log(75)

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

CCSS.HSF.BF.B.5

CCSS.HSF.IF.C.8