Tyler Lindsey
03/02/2024 · Primary School
4. Mr. Garza deposited \( \$ 1,350 \) into an account that earns \( 5.25 \% \) interest compounded annually. He made no additional deposits or withdrawals. What will be the balance in Mr. Garza's account in dollars and cents af the end of 6 years?
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Step-by-step Solution
To find the balance in Mr. Garza's account after 6 years with compound interest, we can use the formula for compound interest:
\[ A = P \times \left(1 + \frac{r}{n}\right)^{nt} \]
Where:
- \( A \) is the amount of money accumulated after \( t \) years, including interest.
- \( P \) is the principal amount (initial deposit).
- \( r \) is the annual interest rate (in decimal form).
- \( n \) is the number of times that interest is compounded per year.
- \( t \) is the time the money is invested for, in years.
Given:
- \( P = \$1,350 \)
- \( r = 5.25\% = 0.0525 \) (in decimal form)
- \( n = 1 \) (compounded annually)
- \( t = 6 \) years
Substitute these values into the formula and calculate the balance in Mr. Garza's account after 6 years.
Calculate the value by following steps:
- step0: Calculate:
\(1350\left(1+\frac{0.0525}{1}\right)^{1\times 6}\)
- step1: Divide the terms:
\(1350\left(1+\frac{21}{400}\right)^{1\times 6}\)
- step2: Add the terms:
\(1350\left(\frac{421}{400}\right)^{1\times 6}\)
- step3: Calculate:
\(1350\left(\frac{421}{400}\right)^{6}\)
- step4: Simplify:
\(1350\times \frac{421^{6}}{400^{6}}\)
- step5: Rewrite the expression:
\(50\times 27\times \frac{421^{6}}{400^{6}}\)
- step6: Rewrite the expression:
\(50\times 27\times \frac{421^{6}}{50^{6}\times 8^{6}}\)
- step7: Reduce the numbers:
\(27\times \frac{421^{6}}{50^{5}\times 8^{6}}\)
- step8: Multiply the fractions:
\(\frac{27\times 421^{6}}{50^{5}\times 8^{6}}\)
The balance in Mr. Garza's account after 6 years will be approximately $1,835.13.
Quick Answer
The balance in Mr. Garza's account after 6 years will be approximately $1,835.13.
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