please answer these three questions

You invest $2,000 three years from today, and an additional $1,000 five years from today, all at a rate of 6%, compounded monthly. How much money will you have 10 years from now? $4,390 $4,345 $4,561 $4,047 Sarah needs $5,000 in 3 years' time, and an additional $4,000 in 7 years' time. At an interest rate of 3%, compounded monthly, how much should she save today to meet her needs? $7,297 $7,828 $8,011 $7,813 You plan to save $5,000 at the end of every year for 5 years. The applicable interest rate is 4%, compounded semi-annually. After 5 years you will no longer make deposits. What will your investment be worth in 8 years' time? $30,463 $27,103 $27,082 $30,523