document.write( "Question 199788: mark invested $12, 000 in a new restaraunt. When the restaurant was sold two years later, he received $ 27,000. Find his average annual return by soloving the equation 12,000( 1 + r)^2 = 27,000_ \n" ); document.write( "

Algebra.Com's Answer #150168 by checkley77(12844) $\"\"$ $\"About$

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12,000( 1 + r)^2 = 27,000
\n" ); document.write( "12,000(1+2r+r^2)=27,000
\n" ); document.write( "12,000+24,000r+12,000r^2-27,000=0
\n" ); document.write( "12,000r^2+24,000r-15,000=0
\n" ); document.write( "(6,000r-3,000)(2,000r+5,000)=0
\n" ); document.write( "6,000-3,000=0
\n" ); document.write( "r=3,000/6,000
\n" ); document.write( "r=.5 or 50% is the average annual return on investment.
\n" ); document.write( " \n" ); document.write( "

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