True I believe my friend.
21-7=14 is a relate subtraction problem
Slope = 0
b = 5
equation
y = 5
5.C
6.A
Hope this helps and is correct
7 7/8 can be estimated to 8
2 2/11 can be estimated to 2
8 + 2 = 10
7 7/8 = 56+7/8 = 63/8
2 2/11 = 22+2/11 = 24/11
63/8 + 24/11 = 693+192/88 = 10.06
So do you see how similar 10 and 10.06 are to each other? :)