document.write( "Question 1139273: A box, with rectangular sides, base and top is to have a volume of 2 cubic feet. It has a square base. Express the surface area A of the box in terms of the width w of the base. If the material for the base and top costs 20 dollars/ft2 and that for the sides costs 30 dollars/ft2 express the total cost C as a function of the width.\r
\n" ); document.write( "\n" ); document.write( "1a. A(w)=?ft^2
\n" ); document.write( "1b. C(w)=$
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Algebra.Com's Answer #757066 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+h+\" = the height of the box
\n" ); document.write( "\"+V+=+w%5E2%2Ah+\"
\n" ); document.write( "\"+2+=+w%5E2%2Ah+\"
\n" ); document.write( "\"+h+=+2%2Fw%5E2+\"
\n" ); document.write( "-------------------
\n" ); document.write( "\"+A+=+2%2Aw%5E2+%2B+4%2Aw%2Ah+\"
\n" ); document.write( "\"+A+=+2%2Aw%5E2+%2B+4%2Aw%2A%28+2%2Fw%5E2+%29+\"
\n" ); document.write( "\"+A%28w%29+=+2%2Aw%5E2+%2B+8%2Fw+\"
\n" ); document.write( "-------------------------------------
\n" ); document.write( "\"+C%28w%29+=+20%2A%28+2%2Aw%5E2+%29+%2B+30%2A%28+8%2Fw+%29+\"
\n" ); document.write( "\"+C%28w%29+=+40w%5E2+%2B+240%2Fw+\"\r
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