document.write( "Question 6400: first question:\r
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document.write( "how much money will you have to deposit in the bank today to buy a house, which will be worth $250,000 five years from now? the bank is charging 6% compounded yearly interest?\r
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document.write( "250000 = (2.06P)5 250000/5 = 2.06/5 50000?
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document.write( "250000/ (1 + .06/2) 10\r
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document.write( "second question:\r
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document.write( "how much money will you have to deposit in the bank today to buy a boat which will be worth $7500 four years from today? use 6% simple interest. \r
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document.write( "hi there, \r
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document.write( "ugh! im so stuck., please please help me, thanks! \r
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document.write( "jen \n" );
document.write( "
Algebra.Com's Answer #3441 by longjonsilver(2297)![]() ![]() You can put this solution on YOUR website! right then..fairly simple question so long as you understand what compound interest is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Lets start with a definition: Let x = amount we start with. So,\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now = x \n" ); document.write( "after 1 year, we will have 1.06x ie 6% increase. \n" ); document.write( "after 2 years we will have 1.06(1.06x) ie a 6% increase of last year's amount. \n" ); document.write( "after 2 years we will have 1.06(1.06(1.06x)) ie a 6% increase of last year's amount... etc\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, we get a pattern forming:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now = x \n" ); document.write( "after 1 year = \n" ); document.write( "after 2 years = \n" ); document.write( "after 3 years = \n" ); document.write( "after 4 years = \n" ); document.write( "after 5 years = \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "x = 186,814.55 rounded up to nearest cent.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jon. \n" ); document.write( " \n" ); document.write( " |