document.write( "Question 103394: i NEED HELP TRYING TI FIGURE THIS OUT.\r
\n" ); document.write( "\n" ); document.write( "PERIMETER OF A RECTANGLE - THE WIDTH OF A RECTANGULAR PLAYGROUND IS 2X - 5 FEET, AND THE LENGHT IS 3X + 9 FEET. WRITE A POLYNOMIAL P(X) THAT REPRESENTS THE PERIMETER AND THEN EVALUATE THIS PERIMETER POLYNOMIAL IF X IS 4 FEET \n" ); document.write( "
Algebra.Com's Answer #75341 by ankor@dixie-net.com(22740)\"\" \"About 
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THE WIDTH OF A RECTANGULAR PLAYGROUND IS 2X - 5 FEET, AND THE LENGHT IS 3X + 9 FEET. WRITE A POLYNOMIAL P(X) THAT REPRESENTS THE PERIMETER AND THEN EVALUATE THIS PERIMETER POLYNOMIAL IF X IS 4 FEET
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\n" ); document.write( "Width = (2x-5)
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\n" ); document.write( "Length = (3x+9)
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\n" ); document.write( "P = 2L + 2W
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\n" ); document.write( "P(x) = 2(3x+9) + 2(2x-5)
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\n" ); document.write( "Multiply what's inside the brackets
\n" ); document.write( "P(x) = (6x + 18) + (4x-10)
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\n" ); document.write( "P(x) = 6x + 4x + 18 - 10; combine like terms
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\n" ); document.write( "P(x) = 10x + 8
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\n" ); document.write( "If x = 4 ft, substitute for 4 for x
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\n" ); document.write( "P(x) = 10(4) + 8
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\n" ); document.write( "P(x) = 40 + 8
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\n" ); document.write( "P(x) = 48 ft
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