Answer:
I was able to do 6-8 but 9 I got stumped on as well.
Step-by-step explanation:
Answer:
-8+2r=6.
2r=8+6
r=7
Step-by-step explanation:
The answer is D because if you continue the pattern the bottom number would have to be 8 and the top would have to be 7!!
From 72 to 90 it is a 25% change