Answer it all thanks

1. In how many years will an annual investment of P 90,000 at 7% effective amount to P310,000? 2. After retiring, a man placed his retirement pay of P2,300,000 at a bank paying 9% interest, compounded monthly. How long will it take to exhaust his funds if he withdraws P15,000 at the end of each month? 3. How long will it take a quarterly deposit of P 7,500 to accumulate to P50,000 if money is worth 10%, compounded quarterly? How much should be the last deposit