What is the common difference of the arithmetic sequence graphed below?

A. 
first i would change 4 4/5 to a mixed number

5×4=20+4=24
4 4/5=24/5

24/5÷2/5
do reciprocal so it is now:
24/5×5/2=120/10

simplify
120÷10=12
10÷10=1

12/1 is 12 

Tara can cut 12 ,2/5 foot pieces

B.
the quotient is how many 2/5 foot pieces Tara can cut from the 4 4/5 feet of rope

hope this helps