Please show how to solve in simplest way with work and formulas shown [ multi part question] if needed can use excel simple.

Your monthly budget for a car is $435,000. Based on your credit profile, you can obtain a 4-year loan with a 4.75% annual rate (assume monthly compounding) With these parameters in place, how much car can you afford to buy? How much Additional car could you buy if you took out a 5-year loan as opposed to a 4-year loan? (assume all other parameters remain constant?) a.) $18,982 and $3,244.78 b.) $19,636.75 and $4,354.41 c.) $18,982.19 and $3,159.35 d.) $18.982.19 and $4,209.26 e.) $19.636.75 and $3,244.78

You own a portfolio. You are considering buying another stock to add to the portfolio. In which of the following situations would you get the largest amount of risk reduction? a.) A stock that has a return series that moves in the same direction as your portfolios return. b.) A stock that has a return series that moves independent of the your portfolios return c.) A stock that has a return series that moves in the opposite direction as your portfolios return. d.) None of these