Hello heroes! please answer it all in a clear way. please help me to answer it.

3. What is the present value of an investment which pays: 30,000 on Jan 1, Year 1 40,000 on December 31, Year 2 50,000 on December 31, Year 4 100,000 on December 31, Year 5 4. What is the value of a perpetuity that pays 30,000 with interest of 8.05%? 5. Compute for the value of the bond: 1. 10% 3,000,000 bond which matures after 5 years interest is payable annually 2. 12% 5,000,000 bond which matures after 8 years interest is payable semi-annually