Please solve all 4 problems. Thank you!

You have $23,000 in your account that you want to grow to triple that amount in 40 years. What annual rate of return is necessary to reach your goal? (Note: Enter your answer is a decimal, not a percentage. For example, enter . 0452 instead of 4.52% ) Your Answer: Answer You have already saved $6950 to buy a used car. You invest this money in a certificate of deposit earning 0.50% APR compounded monthly. How many years will it take your account to reach your target of $7225 in order to buy the new car? Your Answer: Answer You want to borrow $47,000 to buy a new car. Your annual interest rate is 4.6% over 6 years with monthly payments. Calculate your monthly payment. Your Answer: Answer To pay for your education, you've taken out $67,000 in student loans. If you make monthly payments over 10 years at 3% APR interest compounded monthly, how much are your monthly student loan payments? Your