Answer:
just add 8+8+8 until you get to the number u want/need and the same with 7. Or you can multiply.
8x1=8
7x1=7
8x3=24 (8+8+8=24)
7x3=21 (7+7+7=21)
etc.
Hope it helps!
N+2 would be the correct answer... i think!!!!!!!!!!!!
Hope i helped!!!!!!!!
The answer is 6n^3+n^2+6n-4 I hope I helped you!
Its C because the 18in is the height, the 12in is the width, the 24in is the length. Which you just multiply together.
