You MUST use the TI BA II calculator features (N, I/Y, PV, PMT, FV) to solve que

You MUST use the TI BA II calculator features (N, I/Y, PV, PMT, FV) to solve questions whenever possible.
Show ALL your work even if you used a calculator.
dont use this formula FV=PV(1+i)^N
QUESTION6: The advertised month-end financing payments on a $28,757.72 car are $699 for a four-year term. What semi-annual and effective interest rate is being used in the calculation
QUESTION2: Bronco’s four-year investment just matured at $26,178.21. If the investment earned semi-annually compounded interest rates of 4.5% and 4.75% in the first two years, followed by monthly compounded interest rates of 5% and 5.1% in the last two years, how much money did Bronco initially invest.
QUESTION7: An investment fund has $7,500 in it today and is receiving contributions of $795 at the beginning of every quarter. If the fund can earn 3.8% compounded semi-annually for the first one-and-a-half years, followed by 4.35% compounded monthly for another one-and-three-quarter years, what will be the maturity value of the fund