Using distributive property, it would become 14x.
The equation to find volume is V=

r²h and you know all of your numbers other than h so you plug all that in. 100=3.14×2²×h → 100=3.14×4×h → 100=12.56×h → Divide 12.56 from both sides 100÷12.56=12.56×h÷12.56 → 7.96cm=h.
I hope that helps!
Answer:
k^2 ÷ k^2 the third one is correct
Answer:
y=4x^2-31
Step-by-step explanation: