A. you plug in to a calculator, which will give 1840.986 so you need to round up to 1840.99. if you truncate it to .98 then he won't reach 2000 in 3 years
b. for this one if you look at the equation given to find the principle it is principle = result (1+rate) ^ -time
if you re arrange this you get result=principle (1+rate)^time
so result = 1840.99(1.028)^5
= 2113.57
Step-by-step explanation:
Consider the provided information.
For the proportion method first set up the equation like this:

Perform the cross multiplication and then solve for the missing part.
For example:
Find 80 percentage of 10.
Step 1: Set up the equation.


Step 2: Perform the cross multiplication

Step 3: Solve for the missing part.


The area of the garden would be 192 square feet. When you divide the area of his backyard by the side known, you find the missing side. The missing side is 24, which means that is the other leg of the triangle. By using the area formula for a right triangle you find the answer.
You would have saved $156 in a year.
hope that helped :)
The sum of angles is equal to 180 so they are called supplementary angles