hello! please help me with my homework. our lesson is about solving problems involving interest. 1. Find the amount at the end of 12 years if P20 000 is invested at an interest rate of 10% compounded quarterly in the first 3.5 years, 9% converted semi-annually in the next 4.5 years, and 8% simple interest rate in the remaining years. 2. Find the present value of P23 000 due in 5 years and 5 months if money is worth 10 % compounded quarterly. 3. On April 9, 2002, Rosalina borrowed P38 000. She agreed to pay the principal and the interest at 10.5% compounded semi-annually on February 9, 2008. How much will she pay then