Answer:



===========================================================
Step-by-step explanation:
For the 1st row, we have an interest rate of 12% compounded annually.
r = 0.12 and n = 1
The multiplier would be 1+r/n = 1 + 0.12/1 = 1.12 which is the value of b in the equation y = ab^x
The value of 'a' is the starting amount, so we have a = 23000
The equation goes from y = ab^x to y = 23000*1.12^x
Plug x = 0 through x = 4 into that equation to generate what is shown in table 2. Don't forget to round to the nearest cent, aka hundredth.
The table shows that we'll have $32313.34 in the account after 3 years elapse. The amount of interest is 32313.34-23000 = 9313.34 dollars.
To summarize what we'll have for row 1:
- multiplier is 1.12
- equation is y = 23000*1.12^x
- refer to table 2 for a table of values
- we have $32313.34 in the account after 3 years, and $9313.34 interest earned
-----------------
Nearly identical steps are followed for row 2.
We still have r = 0.12
This time we compound the money on a semi-annual basis. Therefore, we compound n = 2 times a year.
multiplier = 1 + r/n = 1 + 0.12/2 = 1 + 0.06 = 1.06
The equation would be y = 23000*1.06^x where x is the number of semi-annual periods. Refer to table 3 to see a selection of values.
If we want to know how much money is in the account after 3 years, aka 2*3 = 6 semi-annual periods, then,
y = 23000*1.06^x
y = 23000*1.06^6
y = 32625.939581888
y = 32625.94
The account will have $32625.94 inside it after 3 years.
Subtract off the deposit amount to figure out how much interest was earned.
32625.94 - 23000 = 9625.94
To summarize what we'll have for row 2:
- multiplier is 1.06
- equation is y = 23000*1.06^x
- refer to table 3 for a table of values
- we have $32625.94 in the account after 3 years (aka 6 semi-annual periods), and $9625.94 interest earned