document.write( "Question 883982: Daniel wants to save at least 20 dollars by putting pennies in a jar each day. On the first day he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he puts n pennies into the same jar. Which day is the first day on which he has at least 20 dollars in the jar? (1 dollar=100 pennies) \n" ); document.write( "

Algebra.Com's Answer #534500 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
S=t*(1 - r^n)/(1 - r)\r
\n" ); document.write( "\n" ); document.write( "2000=1*(1 - 2^n)/(1 - 2)\r
\n" ); document.write( "\n" ); document.write( "n = 10.967
\n" ); document.write( "on the 11 day\r
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