please help with numbers 6,7&8

6. If you are looking for a 4% real return (inflation-free interest) on your investment, would you be interested in an investment opportunity that produces a 10% return on investment (market interest rate) if the inflation rate is 6% ? (5) (No) 7. A series of four annual constant-dollar payments beginning with $10,000 at the end of the first year is growing at the rate of 8% per year. Assume that the base year is the current year (n=0). If the market interest rate is 15% per year and the general inflation rate (f) is 7% per year, find the present worth of this series of payments, based on: (10) a. Constant-dollar analysis ($37487.20) b. Actual-dollar analysis (\$37490) 8. Suppose that you just purchased a used car worth $8,000 in today/s dollars. Suppose also that you borrowed $8,000 from a local bank at 9% compounded monthly over two years. The bank calculated your monthly payment at $365.48. Assuming that average general inflation will run at 0.5% per month over the next two years. (10) a. Determine the monthly inflation-free interest rate ( c) for the bank. (0.2488%) b. What equal monthly payments (in terms of constant dollars over the next two years) are equivalent to the series of actual payments to be made over the life of the loan? (A=$343.80)