Question 50097
1st day: 1^0=1 second
2nd day: 2^1=2 seconds
3rd day: 2^2=4 seconds
4th day: 2^3=8 seconds
....
20th day: 2^19 seconds
30th day: 2^29= 536,870,912 seconds

If you mean "how much time will you have to spend on homework
on the 30th day" the answer is 536,870,912 seconds

Cheers,
Stan H.