Find the cost of each item in 6 years, assuming an inflation rate of \( 7 \% \) (compounded continuously). (Round your answers to the neares cent.) (a) cup of coffee, \( \$ 3.75 \) \( \$ \) (b) Sunday paper, \( \$ 2.25 \) \( \$ \) (c) Big Mac, \( \$ 4.10 \) \( \$ \) (d) gallon of gas, \( \$ 3.85 \) \( \$ \) (e) HDTV set, \( \$ 1,600 \) \( \$ \) (f) small car, \( \$ 17,000 \) \( \$ \) (g) car, \( \$ 28,000 \) \( \$ \) (h) tuition, \( \$ 27,000 \) \( \$ \)
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Bonus Knowledge
To find the future cost of each item after 6 years with a continuously compounded inflation rate of 7%, we use the formula: \[ A = Pe^{rt} \] where: - \( A \) = future value - \( P \) = present value (cost of the item) - \( r \) = inflation rate (0.07) - \( t \) = time in years (6) Let's calculate the future costs for each item: (a) for the cup of coffee, \( A = 3.75 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 3.75 \cdot e^{0.42} \approx 3.75 \cdot 1.519 \approx 5.70 \] Rounded to the nearest cent: \( \$5.70 \) (b) for the Sunday paper, \( A = 2.25 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 2.25 \cdot 1.519 \approx 3.42 \] Rounded to the nearest cent: \( \$3.42 \) (c) for the Big Mac, \( A = 4.10 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 4.10 \cdot 1.519 \approx 6.23 \] Rounded to the nearest cent: \( \$6.23 \) (d) for the gallon of gas, \( A = 3.85 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 3.85 \cdot 1.519 \approx 5.85 \] Rounded to the nearest cent: \( \$5.85 \) (e) for the HDTV set, \( A = 1,600 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 1,600 \cdot 1.519 \approx 2,430.40 \] Rounded to the nearest cent: \( \$2,430.40 \) (f) for the small car, \( A = 17,000 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 17,000 \cdot 1.519 \approx 25,823 \] Rounded to the nearest cent: \( \$25,823.00 \) (g) for the car, \( A = 28,000 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 28,000 \cdot 1.519 \approx 42,552 \] Rounded to the nearest cent: \( \$42,552.00 \) (h) for tuition, \( A = 27,000 \cdot e^{(0.07)(6)} \) Calculating: \[ A \approx 27,000 \cdot 1.519 \approx 40,009 \] Rounded to the nearest cent: \( \$40,009.00 \) Here are all the future costs: (a) \( \$5.70 \) (b) \( \$3.42 \) (c) \( \$6.23 \) (d) \( \$5.85 \) (e) \( \$2,430.40 \) (f) \( \$25,823.00 \) (g) \( \$42,552.00 \) (h) \( \$40,009.00 \)