I could really use some help solving these problems, thanks in advance!

Solve the following problems. Show all calculations and steps. 1. You invest $3000 a year for six years discounted at 12%. What is the value your investment? 2. What is the present value of $20,000 to be received in 5 years discounted at 10% ? 3. Phil Bob will receive $19,000 a year for the next 10 years as a payment of new song he has written. If a 10% rate is applied, should he willing to sell his future right now for $100,000 ? 4. If you owe $40,000 payable at the end of seven years, what amount should your creditor accept in payment immediately if he could earn 12% on his money? 5. Mr. Johnson has just retired after 25 years with electric company. His total pension fund has accumulated the value of $180,000 and his life expectancy is 15 more years. His pension fund manager assumes that he can earn a 9 percent return on his investment. What will be his yearly annuity for next 15 years? 6. If you borrow $15618 and are required to pay back the loan in seven equal annual instaliments of $3000, what is the interest rate associated with the loan? 7. Del Monty will receive the following payments at the end of the next three years: $2000,$3,500, and $4,00. Then from the end of the fourth year through the end of the tenth year, he will receive annuity of