I’m not sure but the patterns seems to be adding three every week.
Answer:
The equivalent expression
Step-by-step explanation:
Assuming your expression is
, then we can use the power property of logarithm , which is
.
If we let a=15, b=2, and n=3
Then using the power property of logarithm will give us:

Using the power property of logarithm, the equivalent expression is 
So we have
2 choices for cloth
3 choices for leather
2 choices for cloth
we have to multiply each individually
we just add them
3 leather+2 cloth=5 choices
she is wrong
because the asnwer is 5