Ok so in math class if I answer this question I'll get a trip to d.c.

If for 30 days I get pennies on the first day I get 1 penny an second day 2 and third day 4 (everyday it doubles) how much pennies would I have on the 30th day

This is easy mate... If you don't want to do any mathematical equations...
Do it by writing everything out.

So you have 30 Days and every day it doubles from the last day.

Days: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Pennies: 1 (*2) 2 (*2) 4 (*2) 8 (*2) 16 (*2) 32 (*2) 64 (*2) 128 (*2) 256 (*2) 512 (*2) 1024 (*2) 2048 (*2) 4096 (*2) 8192 (*2) 16384 (*2) 32768 (*2) 65536 (*2) 131072 (*2) 262144 (*2) 524288 (*2) 1048576 (*2) 2097152 (*2) 4194304 (*2) 8388608 (*2) 16777216 (*2) 33554432 (*2) 67108864 (*2) 134217728 (*2) 268435456 (*2) 536870912

So your answer is 536,870,912 or $5,368,709.12

If you wanted to save some time, you could've just used an equation which is (2^29).

Good luck mate!

{1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192,
16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152,
4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456,
536870912}

Therefore on the 30th day
536870912

2^29

If I tell you, I'll go to D.C., not you. I think you're missing the point of the contest.