Daily Problem, November 3, 2026: Exponential growth and decay

The problem

You put $2000.00 in an account that pays 5% interest compounded once a year. How much is in the account after 9 years? Round to the nearest cent.

Answer

$ 3102.66

Worked solution

  1. Use A = P(1 + r)t with r as a decimal: r = 0.05.
  2. A = 2000 × 1.059 = 2000 × 1.551328.
  3. = $3102.66

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