document.write( "Question 204981: Melissa plans to ship a computer in a cubic box that measures x inches on a side. She later determines that her shipping cost will be less if she uses a rectangular box that is 3 inches shorter and 5 inches longer than the cubic box. Write an equation V(x) for the volume of the new box and match your result to the correct answer below.
\n" ); document.write( "A) V(x) = x3 – 15x in3
\n" ); document.write( "B) V(x) = x3 + 2x – 15 in3
\n" ); document.write( "C) V(x) = x3 – 2x2 – 15x in3
\n" ); document.write( "D) V(x) = x3 + 2x2 – 15x in3 \n" ); document.write( "
Algebra.Com's Answer #154731 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Melissa plans to ship a computer in a cubic box that measures x inches on a side.
\n" ); document.write( " She later determines that her shipping cost will be less if she uses a
\n" ); document.write( " rectangular box that is 3 inches shorter and 5 inches longer than the cubic box.
\n" ); document.write( " Write an equation V(x) for the volume of the new box
\n" ); document.write( ":
\n" ); document.write( "Assuming that the new box has the same height (x)
\n" ); document.write( ":
\n" ); document.write( "V(x) = x * (x+5) * (x-3)
\n" ); document.write( "FOIL
\n" ); document.write( "V(x) = x * (x^2 - 3x + 5x - 15)
\n" ); document.write( ":
\n" ); document.write( "V(x) = x * (x^2 + 2x - 15)
\n" ); document.write( "Multiply by x
\n" ); document.write( "V(x) = x^3 + 2x^2 - 15x cu/inches \n" ); document.write( "
\n" );