I believe the answer is 18, because 5x3=15, so we can only assume that N is 6x3=18.
Answer:
J) 
Step-by-step explanation:

Find the common denominator ^^
Answer:
4x+8
Step-by-step explanation:
Answer:
39%
Step-by-step explanation:
I did this hope it helps
Answer: This expression is equivalent to 3^x
Step-by-step explanation: In this question the important concept is to write 80 in exponential form and multiply the exponents.
=80^1/4x
=(3^4)^1/4x
=3^x