i need help with 3, 4, 10, 11 and 13

subject - personal finance

3. Determining the Inflation Rate. In 2013, selected automobiles had an average cost of $16.000. The average cost of those same automobiles is now $24.000. What was the rate of increase for these automobiles between the two time periods? 4. Computing Future Living Expenses. A family spends $46,000 a year for living expenses. If prices increase by 2 percenta year for the next three years, what amount will the family need for their living expenses after three years? 7-4 10. Using the Time Value of Money for Retirement Planning. Carla Lopez deposits $3,400 a year into her retirement account. If these funds have an average earning of 9 percent over the 40 years until her retirement, what will be the value of her retire- ment account? 1-4 11. Calculating the value of Reduced Spending. If a person spends $15 a week on coffee (assume $750 a year), what would be the future value of that amount over 10 years if the funds were deposited in an account earning 3 percent? 01-4 12. Calculating the Present Value of Future Cash Flows. A financial company advertises on television that they will pay you $60,000 now in exchange for annual payments of $10,000 that you are expected to receive for a legal settlement over the next 10 years. If you estimate the time value of money at 10 percent, would you accept this offer? 01.4 13. Calculating the potential Future Value of Savings. Tran Lee plans to set aside $2,400 a year for the next six years, earning 4 percent. What would be the future value of this savings amount