Answer:
GCF 4, LCM 80
Step-by-step explanation:
Since both 16 and 20 have two 2s as factor, their greatest common factor is 4.
The LCM is found by multiplying all of the remaining factors by the LCM:
16 still has (2 x 2), 20 still has (5), times the GCF (4) so 2 x 2 x 5 x 4 = 80.
The answer is Division property of equality. This is because at Step 3, you have to divide to get your final answer. It cannot be the other ones because you do not subtract or distribute in step 3.

Factor square root of 32: 2^5/2.
Factor 4: 2^2

Cancel 2 1/2= 2 1/2.
2 1/2= square root of 2.
Answer: 
Hope this helps :)
Looking at the problem I think the answers are C, D, AND E
Here you go. This is the graph of the function:
y - 3 = 2(x - 5)