compound interest
Optional: How much compound
interest is earned at 45 years?
(looks about 3 quarters(25) of the way to the whole
number)
Optional: How much simple
interest is earned at 45 years?
(looks close to the whole number)
-------- Total amount (dollars)
1500+
1400
1300
12004
1100
1000
900
800-
700
600
500
400-
300
200
100
simple interest
(b) How much more compound
interest than simple interest is
earned after 45 years?
0
10
15 20 25 30 35 40 45 50
Number of years