Answer:
0
Step-by-step explanation:

1) 16y - 24x = 8 (2y - 3x)
2) 3x - 6x²y + 12x²= 3x(1 - 2x²y + 4x)
3)2x² - 10x = 2x ( x -5)
4) 15x² - 20x³ = 5x²(3 -4x)
If you explain what they mean by DOTS i might be able to help you from 5-8
hope it helps for 1-4 tho
First isolate the group with h in it
minus 2pir^2 from both sides
s-2pir^2=2pirh
divide both sides by 2pir
(s-2pir^2)/(2pir)=h
Answer:A
Step-by-step explanation: the answer is a