please explain answer (how to compute with a fonancial calculator)

Question 6: If you need $40,000 for your son's education in 10 years, how much must you deposit at the beginning of each year in the bank earning 6 percent in order to have the college money ready? Question 7: If you have $30,000 in a savings account earning 10 percent, how large an annuity can you draw out each year if you want nothing left at the end of 8 years? Question 8: You borrow $6,000 at a 10 percent annual rate to be repaid in 3 equal payments at the end of each of the next 3 years. How large is the total interest payment over the three years? Question 9: I invested $600.000 in a cattle ranch and I sold that ranch for $1.800,000 ten years later. What was my annual percentage rate return? Question 10: How much can I borrow for the purchase of my first home if I can afford to make monthly payments of $1,000, and the annual interest rate is 4.8 percent on a 30-year mortgage