Answer:
Time=
years
Step-by-step explanation:
Let total time
Initial Amount
Final Amount
Total interest = Final Amount - Initial Amount

Simple Interest 
Answer:
The expression is (64 - x).
Step-by-step explanation:
The statement is:
"the difference of 8 squared and a number"
Let the number be denoted by <em>x</em>.
The value of 8 squared is:


Then the expression for the provided statement is:
(64 - x)
Thus, the expression is (64 - x).
33 square inches --> straight line across
25 square inches --> straight line across
I think you would have 3 1/2 yards left (3 2/4 simplified)