3. ANTHONY NEEDS TO EARN \( \$ 150 \) FOR HIS FOOTBALL CLEATS. HE IS EARNING MONEY BY WASHING CARS FOR HIS NEIGHBORS.

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.

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 \( 0.00 \% \)

How much money must you invest now at \( 4.6 \% \) interest compounded continuously in order to have \( \$ 10,000 \) at the end of 6 years?

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