Question: Practice 16 Find the future value of ($ 100) compounded continuously at an annual rate of (6%) for 12 years. 17 How long will it
Practice 16 Find the future value of \(\$ 100\) compounded continuously at an annual rate of \(6\%\) for 12 years. 17 How long will it take for a sum of money to triple in value if invested at an annual rate of \(3\%\) compounded continuously? 18 If a piece of machinery depreciates continuously at an annual rate of \(4\%\), how many years will it take for the value of the machinery to halve? 19 A department store has its own credit card facilities, for which it charges interest at a rate of \(2\%\) each month. Explain briefly why this is not the same as an annual rate of \(24\%\). What is the annual percentage rate? 20 Determine the APR if the nominal rate is 7\% compounded continuously. 21 Current annual consumption of energy is 78 billion units and this is expected to rise at a fixed rate of \(5.8\%\) each year. The capacity of the industry to supply energy is currently 104 billion units. (a) Assuming that the supply remains steady, after how many years will demand exceed supply? (b) What constant rate of growth of energy production would be needed to satisfy demand for the next 50 years?
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