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Part 1
Suppose your​ friend's parents invest $ 10 comma 000 in an account paying 5 % compounded annually. What will the balance be after 6 ​years?
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Part 1
The account balance will be ​$
  
enter your response here
​(Round to the nearest cent as​ needed.)

1 answer

To calculate the balance of an investment that is compounded annually, you can use the formula for compound interest:

\[ A = P(1 + r)^n \]

Where:

  • \( A \) is the amount of money accumulated after n years, including interest.
  • \( P \) is the principal amount (the initial amount of money).
  • \( r \) is the annual interest rate (decimal).
  • \( n \) is the number of years the money is invested or borrowed for.

In this case:

  • \( P = 10,000 \)
  • \( r = 0.05 \) (5% as a decimal)
  • \( n = 6 \)

Now plug the values into the formula:

\[ A = 10,000(1 + 0.05)^6 \]

Calculate \( (1 + 0.05)^6 \):

\[ (1.05)^6 \approx 1.340095 \]

Now calculate \( A \):

\[ A \approx 10,000 \times 1.340095 \approx 13,400.95 \]

So, the balance after 6 years will be approximately:

\[ \text{The account balance will be } \mathbf{13,400.95} \]

(Rounded to the nearest cent as needed.)