Burgess Long
04/13/2024 · Elementary School
Investing \( \$ 10,000 \) in a savings account at \( 5 \% \) annual inte money after 10 years? Use the formula: \( \Lambda=P\left(1+\frac{r}{m}\right)^{m t} \) \( \$ 13,448.89 \) \( \$ 15,000.00 \) \( \$ 16,288.95 \) \( \$ 16,386.16 \)
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Step-by-step Solution
Given:
- Principal amount, \( P = \$10,000 \)
- Annual interest rate, \( r = 5\% = 0.05 \)
- Time period, \( t = 10 \) years
- Compounding frequency, \( m = 1 \) (compounded annually)
We can use the formula for compound interest to calculate the amount of money in the savings account after 10 years:
\[ A = P\left(1+\frac{r}{m}\right)^{m t} \]
Substitute the given values into the formula:
\[ A = 10000\left(1+\frac{0.05}{1}\right)^{1 \times 10} \]
Now, we can calculate the amount of money in the savings account after 10 years.
Calculate the value by following steps:
- step0: Calculate:
\(10000\left(1+0.05\right)^{10}\)
- step1: Add the numbers:
\(10000\times 1.05^{10}\)
- step2: Convert the expressions:
\(10000\left(\frac{21}{20}\right)^{10}\)
- step3: Simplify:
\(10000\times \frac{21^{10}}{20^{10}}\)
- step4: Rewrite the expression:
\(400\times 25\times \frac{21^{10}}{20^{10}}\)
- step5: Rewrite the expression:
\(20^{2}\times 25\times \frac{21^{10}}{20^{10}}\)
- step6: Reduce the numbers:
\(25\times \frac{21^{10}}{20^{8}}\)
- step7: Rewrite the expression:
\(25\times \frac{21^{10}}{5^{8}\times 4^{8}}\)
- step8: Rewrite the expression:
\(5^{2}\times \frac{21^{10}}{5^{8}\times 4^{8}}\)
- step9: Reduce the numbers:
\(\frac{21^{10}}{5^{6}\times 4^{8}}\)
- step10: Multiply the fractions:
\(\frac{21^{10}}{15625\times 4^{8}}\)
- step11: Expand the expression:
\(\frac{21^{10}}{1024000000}\)
The amount of money in the savings account after 10 years is approximately \$16,288.95.
Therefore, the correct answer is \( \$16,288.95 \).
Quick Answer
The amount of money in the savings account after 10 years is approximately \$16,288.95.
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