please explain and answer all

Rebecca Wensell invests $30,000 at 8% per year, leaving the money invested without withdrawing any of the interest for 8 years. At the end of the 8 years, Rebeca withdrew the accumulated amount of money. Instructions: (A) Calculate the amount that Rebecca would withdraw assuming that the investment earns simple interest. (B) Calculate the amount that Rebecca would withdraw assuming that the investment earns compound interest. annually. (C) Calculate the amount that Rebecca would withdraw assuming that the investment accrues interest compounded semi-annually