Susan deposits $2000 into a bank account that pays interest at the following rates: an effective rate of interest of 4% per annum for the first three months, an effective rate of interest of 2.5% per...

Help me solve a and b, thank you

Extracted text: Susan deposits $2000 into a bank account that pays interest at the following rates: an effective rate of interest of 4% per annum for the first three months, an effective rate of interest of 2.5% per annum for the following eight months, and • an effective rate of interest of 3% per annum thereafter. (a) Calculate, correct to 2 decimal places, the accumulated value of Susan's deposit after exactly 6 months have elapsed. (b) Calculate the least integer number of months she must leave that $2000 in the account for it to grow to at least $2200.