Need assitance with E, F, G. Please refrain from using Excel! Thanks!

7) a) If the corporate tax rate is 40% and the individual tax rate is 20% (and these are the only taxes), if a corporation has $50,000 of operating income, what is the after tax income for its owners? b) The tax rate is 15% between $0-$50,000 and 25% between $50,001-$100,000. If you earn $60,000, then what is your average and marginal tax rates? A bank has quoted to you a monthly rate of 0.25% on a short-term loan. what is the stated annual rate of that loan? c) d) What is the future value of S8 in three years if the interest rate is 20% and the compounding is continuous? e What is the future value of a 3-year annuity due with $50 cash flows if the annually compounded interest rate is 6%? f) If we need to find the future value of a current cash flow and interest is compounded quarterly, how many periods of compounding occur in two and half years? What is the difference between the present value of a 3-year ordinary annuity with a $20 cash flow and the present value of a 3-year annuity due with a $20 cash flow when the interest rate is 3.5%