Answer:
r =
Step-by-step explanation:
r=30√12,−30√12
-1 1/2 is the answer. I'm making 20 characters.
Answer:
45
Step-by-step explanation:
The change of base formula allows you to write a logarithm in terms of logarithms with another base. It follows this pattern,

where a≠1 and b≠1
Assigning the base to be 7,

I hope I was able to answer your question. Have a good day.