document.write( "Question 1091345: Your friend is saving pennies. She puts one penny into her piggy bank the first day, two pennies the second day, four the third day, and so on, doubling the number of pennies added. How many much money would she have at the end of vacation, if she could keep saving at this rate? Vacation lasts 75 days.\r
\n" ); document.write( "\n" ); document.write( "I would like to know if there is a formula for solving this problem, which I am fairly sure there is. I also have an understanding that the answer is very large. \n" ); document.write( "
Algebra.Com's Answer #705727 by math_helper(2461)\"\" \"About 
You can put this solution on YOUR website!
The answer is indeed huge:\r
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document.write( "Number        Amount
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document.write( "of Days        Saved (cents)
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document.write( "——————        ——————
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document.write( "  1              1
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document.write( "  2              3
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document.write( "  3              7
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document.write( "  4             15
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document.write( "  5             31
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document.write( "  :               :
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document.write( "  :               :
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document.write( "  n             \"2%5En+-+1+\" \r
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document.write( "—
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document.write( "So after 75 days, she will have saved \"+2%5E75+-+1+\" pennies, which is  \"+3.777893+\" \"+x+10%5E20+\" dollars…  way, way,  more money than is circulating in all the world's economies.
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document.write( "To put that amount in perspective, it would be enough to pay off the entire national debt of the USA ($19,000,000,000,000), not just a few times, but over 19,883,000 times!  \r
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