The last one I can't get the signs up
5 pairs of shoes = 10 shoes

They will cover 96 2/3 inches.
Hope this helps. - M
Answer:
The answer is option 4.
Step-by-step explanation:
In the number line above, G lies at point 3 and F lies at point -1.5. In order to find the distance between F and G, you need to subtact F from G :

I am assuming you wrote the problem wrong. Is it a^2?
A^2 -4A-21=0
(A-7)(A+3)=0
A=7 A=-3, ignore the negative number because it doesn't make sense if you plug in for a.
length=a+3=7+3=10
Width=7=a