Solution :
At every stage the formula used will be :

After the junior year, Aunt Mabel's bank balance will be :

= $ 7,322.65
Aunt Mabel's bank balance after sophomore year will be :
7,322.65 + 1000 = $ 8,322.65

= $ 8060.677
After the freshman year, bank balance of Aunt Mable's will be :
8060.677 + 6000 = $ 14,060.677

= $ 14.0606
If Aunt Mabel can predict the interest rate with accuracy, she will have to deposit :
$ 14.0606 + $ 9000 = $ 9,014.06

= $ 8,565.241
<u>Answer: </u>Option D
<u>Explanation:</u>
When the government tries to reduce the production or consumption of certain goods taxes can help the government to perform this action. Taxes alter the resource allocation by giving disincentives for production, consumption or exchange of these goods. Consumer decisions on savings and retirements can be controlled through taxes. Through affecting their decisions, their behavior to take actions based on the decision can also be changed.
By keeping a check on the incentives of the people through taxes the demand and supply can be decreased. This further decreases the productivity of the country.
Yes it is 100% you can do anything