I Need Help Please???

A local car wash charges $3.00 per wash or the option of paying $12.95 for 5 washes, payable in advance with the first wash. If you normally washed your car once a month, would the option be worthwhile if your Minimum Attractive Raito of Return (MARR) is 29% compounded annually? A person borrows $5,000 at an interest rate of 18% compounded monthly. Monthly payments of $180.76 are agreed upon. What is the length of the loan? (It is an integral number of years.) What is the total amount that would be required at the end of the sixth month to payoff the entire balance? The returns for a business for five years are as follows: $8, 250; $12, 600; $9, 750; $11, 450 and $14, 500. If the value of the money is 12%, what is the equivalent uniform annual benefit for the five-year period? I have borrowed $1000 from the bank. The interest rate I am to pay is 20%, compounded monthly. I am to repay the loan by making 24 equal monthly payments. What is the amount of my monthly payments? Tony invested $15,000 in a high yield account. At the end of 30 years he closed the account and received $539, 250. Compute the effective interest rate he received on the account. A largo bakery is considering three alternative investments for next year. They were identified by the processing engineering department to be important feasible projects that merit evaluation. They calculated they spent $5, 600 in the last 6 months gathering the following information