3. A student pays 87.50 per quarter for insurance. What would the pay- ments be if they were made annually? Monthly? Weekly? Every two years? Annual interest is 18% compounded monthly. 4. A bank customer deposits $100 at the end of every quarter for 5 years. He then increases the deposit to $120 and continues to make quarterly payments for 6 more years. Assuming an effective rate of 8% per annum, how much is in account after 5 years? After 11 years? 5. Consider payments of $10 per week at 7% effective rate of interest per years for 8 years. Find the accumulated value at the time of the last payment