5,120........................................
Answer: Two regular octagons and eight congruent rectangles
Step-by-step explanation:
An octagon has 8 sides and the shapes on the bottom of the shape are 8 rectangles.
It is 6 was not multiplied by 3
The answer should be 6(m+3)= 6m+ 18
If I've read this correctly, it looks like this.

If that is correct, then the first step is to put the top part of the denominator over 3x
The next part is to flip a three tier fraction. I'm afraid I have to show what happens. My latex is not that strong.
What you get is

This is just about your final answer. You could write it as

Answer:
vvv
Step-by-step explanation:
2,4,6,8,10
Pattern Rule:Add 2
1,2,4,8,16
Pattern:Multiply by 2
Sorry these were simple.