please help me solve these problems, i will be so so grateful, thank you!

1. Want is the corresponding effective rate of 18% compounded semi- quarterly? (m-8) 2. A bank pays one percent interest on savings accounts four times a year. The effective annual interest rate is 3. The effective rate of 14% compounded semi-annually is 4. An interest rate in guated as being compounded quarterly What is the effective and interest rate? 5. The amount of P12, 800 in 4 years at 5% compounded quarterly is 6. An man expects to receive P25,000 in 8 years. How much is that money worth now considering interest at 8% compounded quarterly