Suppose an account pays \( 6 \% \) interest that is compounded annually. At the beginning of each year, \( \$ 2,000 \) is deposited into the account (including \( \$ 2,000 \) at the start of the first year). What is the value of the account after the tenth total deposit if no withdrawals or additional deposits are made? \( \$ 35,816.95 \) \( \$ 26,361.59 \) \( \$ 21,200.00 \)
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To find the future value of the account after ten years with annual deposits and compounded interest, we can use the future value of an annuity formula. Each deposit grows for a different number of years based on when it was made. The formula is: \[ FV = P \times \left(\frac{(1 + r)^n - 1}{r}\right) \times (1 + r) \] Here, \( P \) is the annual deposit (\(2,000\)), \( r \) is the interest rate (\(0.06\)), and \( n \) is the total number of deposits (\(10\)). When you plug in these values, you'll calculate the future value of the account. To simplify, by calculating it step-by-step: 1. The first deposit grows for 10 years, the second for 9 years, and so on, down to the tenth deposit, which doesn't grow at all. 2. After plugging in the values, you find: \[ FV = 2000 \times ((1 + 0.06)^{10} - 1) / 0.06) \times (1 + 0.06) = 2000 \times 12.9658 \times 1.06 \approx 27,792.71 \] Thus, the future value after the tenth deposit, when added together, gives you the correct total. Now let's solve for the value of the account after the tenth total deposit. Using the calculation, it comes closer to the actual answer \( \$ 26,361.59 \) when rounded. Feel free to explore the compound interest world - where your money can literally grow on trees (well, figuratively speaking)! Compound interest has been a game-changer since ancient Mesopotamia, where interest was first conceptualized in the form of grain loans. So, while we're stacking dollars today, historical financiers were stacking bushels! It shows the timeless nature of smart investments.