Answer:
It is not a good investment because
∑ yearly incomes < Final cost of investment
i.e. $11775 < $16450
Explanation:
Cost of investment ( principal ) = $7000
Interest rate ( r ) = 9% = 0.09
tenure ( t ) = 15 years
hence Final cost of investment ( A ) = P + Prt
A = 7000 + ( 7000 * 0.09 * 15 ) = $16450
Annual incomes
First year = $1100
2nd year = $1100 - $45 = $ 1055
3rd year = $1055 - $45 = $1010
4th year = $1010 - $45 = $965
5th year = $965 - $45 = $920
6th year = $920 - $45 = $875
7th year = $875 - $45 = $830
8th year = $830 - $45 = $785
9th year = $785 - $45 = $740
10th year = $740 - $45 = $695
11th year = $695 - $45 = $650
12th year = $650 - $45 = $605
13th year = $605 - $45 = $560
14th year = $560 - $45 = $515
15th year = $515 - $45 = $470
Total annual income = ∑ yearly incomes = $11775
It is not a good investment because
∑ yearly incomes < Final cost of investment
i.e. $11775 < $16450