Se comprar 4 telefones idênticos, que porcentagem de desconto te daria este cupom no total da compra? ? \( \% \)

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

Find the time required for an investment of 3,000 dollars to grow to 12,000 dollars at an interest rate of \( 7 \% \) per year, compounded monthly. Give your answer accurate to 2 decimal places. \( \square \) years.

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

Suppose you have \( \$ 3000 \) deposited at \( 4.35 \% \) compounded weekly. About how long will it take your balance to increase to \( \$ 4200 \) ? years Round your answer to the nearest tenth of a year

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.