13. [ 9 points] You have \( \$ 3500 \) to invest. You can choose from two accounts in which to invest your money. The first is a simple interest account that earns \( \$ 100 \) each year. The second is a compound interest account that earns \( 3.5 \% \) interest per year. Answer the following questions: a. How long will it take to double your money in the simple interest account?

To borrow money, you pawn your guitar. Based on the value of the guitar, the pawnbroker loans you \( \$ 1080 \). One month later, you get the guitar back by paying the pawnbroker \( \$ 1272 \). What annual interest rate did you pay? You will pay a simple interest rate of \( \square \% \) (Round to the nearest whole number as needed.)

The principal \( P \) is borrowed at simple interest rate \( r \) for a period of time \( t \). Find the loan's future value, \( A \), or the total amount due at time \( t \). \( P=\$ 38,000, r=6.5 \%, t=5 \) years The future value is \( \$ \square \). (Simplify your answer. Type an integer or a decimal.)

The principal \( P \) is borrowed at a simple interest rate \( r \) for a period of time \( t \). Find the simple interest owed for the use of the money. Assume 365 days in a year. \( P=\$ 7000, r=4.5 \%, t=18 \) months The simple interest owed for the use of the money is \( \$ \square \). (Do not round until the final answer. Then round to the nearest cent as needed.)

25. You own a custom computer software business. You must invest \( \$ 3,255 \) for computer hardware, and spend \( \$ 2.90 \) to buy and package each disk. If each disk sells for \( \$ 13.75 \), write a system of equations and determine how many disks you must sell to break even. 26. The ballpark needs to make at least \( \$ 15,000 \) from ticket sales. The ticket prices are \( \$ 20 \) for

Determine the effective annual yield for each investment. Then select the better investment. \( 3.06 \% \) compounded monthly; \( 3.07 \% \) compounded annually Click the icon to view some finance formulas. Select the correct choice below and fill in the answer boxes within your choice. (Round to the nearest hundredth as needed.) A. The second investment, \( 3.07 \% \) compounded annually, is the better investment because the effective annual yield for the first investment is investment is \( \square \% \). The first investment, \( 3.06 \% \) compounded monthly, is the better investment because the effective annual yield for the first investment is \( \square \% \) annual yield for the second investment is \( \square \% \).