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Suppose that you deposit $1,000 in a savings account paying 6% interest compounded annually: How much is it worth at the end of the second year? Show the formula, do the math step by step until the final result, and indicate the unit of measurement.

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Final answer:

To find the value of a $1,000 deposit after two years with 6% interest compounded annually, use the formula A = P(1 + r/n)^(nt). After performing the calculations, the value of the amount will be $1,123.60.

Step-by-step explanation:

To calculate the future value of a $1,000 deposit in a savings account with a 6% interest rate compounded annually, we use the compound interest formula. This formula is A = P(1 + r/n)nt, 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 times that interest is compounded per year.
  • t is the time the money is invested for, in years.

The problem specifies that the interest is compounded annually, which means n=1. We're looking to find the value after 2 years, so t=2. Also, our annual interest rate r is 6%, or 0.06 as a decimal.

The formula for our specific situation becomes:

A = $1,000(1 + 0.06/1)1*2 = $1,000(1 + 0.06)2

Performing the calculation step by step:

  1. Calculate the parentheses portion first: 1 + 0.06 = 1.06.
  2. Raise 1.06 to the power of 2: 1.062 = 1.1236.
  3. Multiply the principal amount by the result from step 2: $1,000 * 1.1236 = $1,123.60.

The account will be worth $1,123.60 at the end of the second year. The unit of measurement is US dollars (USD).

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