What is the question you are asking?
Answer:
Step-by-step explanation:
<u>The quotient of -7 and y is:</u>
Answer:
420 ft^2
Step-by-step explanation:
12x70=840
840/2=420

Formula works when n=1
Assume the formula also works, when n=k.
Prove that the formula works, when n=k+1

Since the formula has been proven with n=1 and n=k+1, it is true. 
Gcf is the factors and the lcm is the multiples