Find the doubling time of an investment earning \( 3 \% \) interest if interest is compounded continuously.

How much would you need to deposit in an account now in order to have \( \$ 5000 \) in the account in 10 years? Assume the account earns \( 2 \% \) interest compounded monthly.

Juan Martin and Melanie have a new grandson. How much money should they invest now so that he will have \( \$ 74,000 \) for his college education in 18 years? The money is invested at \( 6.35 \% \) compounded annually.

Michelle invests in a savings account that pays \( 8 \% \) interest compounded monthly. What is the APY for this account? \( \square \) Round to the nearest \( 0.00 \% \)

Find the effective yield of an investment that earns \( 5.25 \% \) compounded quarterly. round to the nearest hundredth of a percent

Michelle invests in a savings account that pays \( 8 \% \) interest compounded monthly. What is the APY for this account? \( \square \) Round to the nearest \( 0.00 \% \)