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Interest

and Logarithmic Functions
If $1500 are deposited into an account with a
7% interest rate, compounded quarterly, what is
the balance after 15 years?
F = P(1 + 5)nt
Start by entering P, or the principal
(initial investment).
P = $[?]
Enter

User Totooooo
by
8.3k points

1 Answer

6 votes

Final answer:

To find the future balance of a $1500 deposit with 7% interest compounded quarterly after 15 years, you can use the compound interest formula and substitute the appropriate values to calculate the total future amount.

Step-by-step explanation:

To calculate the balance of $1500 deposited into an account with a 7% interest rate, compounded quarterly, after 15 years, you will use the compound interest formula:


F = P(1 + r/n)nt

Where:


  • P is the principal amount (the initial amount of money)

  • r is the annual interest rate (decimal)

  • n is the number of times that interest is compounded per year

  • t is the time the money is invested for, in years

Steps to calculate the future balance:


  1. Convert the interest rate from a percentage to a decimal: 7% = 0.07

  2. Since the interest is compounded quarterly, n = 4

  3. Substitute the values into the formula: F = 1500(1 + 0.07/4)4 * 15

  4. Calculate the amount: F ≈ 1500(1.0175)60

  5. Use a calculator to find the value of (1.0175)60

  6. Multiply this value by 1500 to find the future balance

Using these steps, you can determine the total future amount in the account after 15 years.

User David Marko
by
9.3k points