Interest on an Investment A 3year certificate of deposit pays interest at a rate
(a) Expand the expression for
(b) Find the amounts
Interest rate

2%  3%  4.5%  6%  10% 
Amount

(a)
To expand:
The expression for
Approach:
1. Perfect cube formula:
2. Degree of the polynomial: The degree of the polynomial is the highest power of the variable that appears in the polynomial.
Calculation:
The amount at maturity is given by
Expanding the above expression, using perfect cube formula.
(b)
To find:
The amount of
Interest rate 
2%  3%  4.5%  6%  10% 
Amount 
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