Martina's grandparents paid for the first 3 years of her college costs. As a senic loan in the amount of \( \$ 9,300 \) at a \( 4.29 \% \) interest rate for 10 years. a. If she chooses to make interest-only payments until the monthly loan payme interest-only payments? Express as a decimal (in years). \( \$ 398.67 \) b. What would be the total amount of her interest-only payments? \( \$ 3,986.70 \) c. If she begins her loan repayment with no interest capitalization since she alre and during the 6 -month grace period, how much will she have paid in interest \( f \) period? \( \$ 13,286.70 \)

A man invests his savings in two accounts, one paying 6 percent and the other paying 10 percent simple interest per year. He puts twice as much in the lower-yielding account because it is less risky. His annual interest is 8250 dollars. How much did he invest at each rate? Your answer is total in the account paying 6 percent interest is total in the account paying 10 percent interest is

What is the approximate balance after 20 years? Choose the correct answer below. \( \begin{array}{ll}\text { A. } \$ 200 & \text { B. } \$ 400 \\ \text { C. } \$ 100 & \text { D. } \$ 10 \\ \text { b) About how fast is the balance increasing after } 20 \text { years? } \\ \text { Choose the correct answer below. } \\ \begin{array}{ll}\text { A. } \$ 5 / y e a r & \text { B. } \$ 200 / y e a r \\ \text { C. } \$ 20 / y e a r & \\ \text { c) Use the answers to parts a) and b) to determine the interest rate. }\end{array} \\ \text { The interest rate is } \square \% .\end{array} \)

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 \( \$ 14 \) million? Find a function \( \mathrm{A}(\mathrm{t}) \) that gives the current value of the farm. \( \mathrm{A}(\mathrm{t})=\square \) (Type an exact answer.)

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.)

Find the present value of \( \$ 7,000 \) to be received in 5 years, if money may be invested at \( 7.2 \% \) with interest compounded continuously. The present value is \( \$ \square \). (Round to the nearest cent as needed.)