Marge has 14 2/5 feet of chain. she wants to make pieces of 3/8 foot long. how many can she make?

The total amount she can make is 38 

38 pieces. 

Steps
1. Make 14 2/5 into a improper fraction. 72/5
2. Make the denominators in each fraction the same. Multiply 72/5 by 8 making 576/40. Multiply 3/8 by 5 making 15/40.
3. Divide them.

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2