Question 14 Use the compound interest formula to compute the future value of the investment. Round to the nearest cent. \( \$ 600 \) at \( 3.5 \% \) compounded daily for 6 years (assume 360 days per year)

A famous painting was sold in 1947 for \( \$ 21,700 \). In 1980 the painting was sold for \( \$ 31.1 \) million. What rate of interest compounded continuously did this investment earn? As an investment, the painting earned an interest rate of \( \square \% \). (Round to one decimal place as needed.)

A farm purchased in 2000 for \( \$ 1 \) million was valued at \( \$ 3 \) million in 2008. If the farm continues to appreciate at the same rate (with continuous compounding), when will it be worth \( \$ 11 \) million? Find a function \( A(t) \) that gives the current value of the farm. \( A(t)=\square \) (Type an exact answer.)

A famous painting was sold in 1947 for \( \$ 21,700 \). In 1980 the painting was sold for \( \$ 31.1 \) million. What rate of interest compounded continuously did this investment earn? As an investment, the painting earned an interest rate of \( \square \% \). (Round to one decimal place as needed.)

How much money must you invest now at \( 4.2 \% \) interest compounded continuously in order to have \( \$ 10,000 \) at the end of 4 years? You must invest \( \$ \square \). (Round to the nearest cent as needed.)

A rational decision maker takes an action if and only if a. the marginal cost of the action exceeds the marginal benefit of the action. b. the opportunity cost of the action is zero. c. the marginal cost of the action is zero. d. the marginal benefit of the action exceeds the marginal cost of the action.