Answer:
60
Step-by-step explanation:
Plz brainliest
A logarithmic function without a subscript means that it must be log base 10.

When learning about logarithms, a textbook/teacher provides their students with the following general equations


Hopefully you are familiar with this. Using the equations that I just showed, we can change the equation
to 
This would make answer choice C correct.
15-7=8
8×2=16
That's the answer