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HW Score: \( 60 \%, 6 \) of 10 points To help pay for new costumes for a play, a theater invests \( \$ 1900 \) in a 42-month \( C D \) paying \( 3.8 \% \) interest compounded monthly. Determine the amount the theater will receive when it cashes in the CD after 42 months. The theater will receive \( \$ \square \) when it cashes in the \( C D \). ? (Round to the nearest cent as needed.)

Ask by Dickson Hall. in the United States
Mar 06,2025

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The theater will receive approximately \$2169.71 when it cashes in the CD.

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To determine the amount the theater will receive when it cashes in the CD after 42 months, we can use the formula for compound interest: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] 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 or borrowed (in years). For this problem: - \(P = 1900\) - \(r = 3.8\% = 0.038\) - \(n = 12\) (because the interest is compounded monthly) - \(t = 42 \text{ months} = 42/12 = 3.5 \text{ years}\) Now substituting the values into the formula: \[ A = 1900 \left(1 + \frac{0.038}{12}\right)^{12 \times 3.5} \] \[ A = 1900 \left(1 + \frac{0.038}{12}\right)^{42} \] \[ A = 1900 \left(1 + 0.00316667\right)^{42} \] \[ A = 1900 \left(1.00316667\right)^{42} \] \[ A = 1900 \left(1.143781643\right) \quad(\text{using a calculator}) \] \[ A \approx 2173.19 \] So, the theater will receive approximately \( \$ 2173.19 \) when it cashes in the CD after 42 months.

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