document.write( "Question 1015816: How high can the river rise in 5 days if the first day the river rose 3 inches & each day after it rose twice as much as the previous day ? \r
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Algebra.Com's Answer #632202 by ikleyn(52855) You can put this solution on YOUR website! . \n" ); document.write( "How high can the river rise in 5 days if the first day the river rose 3 inches & each day after it rose twice as much as the previous day ? \n" ); document.write( "-----------------------------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The sum of the five first terms of a Geom. progression with the 1-st term 3 and common difference 2:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 + 2*3 + 4*3 + 8*3 + 16*3 = 3*(1 + 2 + 4 + 8 + 16) = 3*31 = 93 in.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |