1)Y=165000(1-0.04)^t
2)y=165000(1-0.04)^20=?? Use the calculator
104 ÷ 5.1 = 20.3921
Nearest tenth 20.4

As you've got 15%, the best thing to do is to find 10%, then multiply it by 1.5. Once you've found the tip, you add this onto the cost of the meal.
Therefore, the total cost of $25 meal with a 15% tip is $28.75
Hope this helps :)
Well do 24 - 13.
You should get 11.
N = 11.
The peaches cost more per pound because if you divide the pounds of peaches by the cost, it's more than the cost per pound of apples.