document.write( "Question 987859: A company produces two models of a surfboard: a standard model and a competition model. If the standard model is produced at a variable cost of $50 each and the competition model at a variable cost of $70 each, and if the total fixed cost per month are $2000, then the monthly cost function is given by C(x,y)=2000+50x+70y, where x and y are the numbers of standard and competition models produced per month, respectively. Find C(6,20) \n" ); document.write( "

Algebra.Com's Answer #608634 by josmiceli(19441) $\"\"$ $\"About$

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C(6,20 ) is a point on the line which is part of
\n" ); document.write( "a 3-D plot, C( x,y ), and the form is:
\n" ); document.write( "C( x,y ) = C( 6,20 ), so $\"+x+=+6+\"$ , $\"+y+=+20+\"$
\n" ); document.write( "-----------------------------------------
\n" ); document.write( " $\"+C%28+x%2Cy+%29+=+2000+%2B+50x+%2B+70y+\"$
\n" ); document.write( " $\"+C%28+6%2C20+%29+=+2000+%2B+50%2A6+%2B+70%2A20+\"$
\n" ); document.write( " $\"+C%28+6%2C20+%29+=+2000+%2B+300+%2B+1400+\"$
\n" ); document.write( " $\"+C%28+6%2C20+%29+=+3700+\"$
\n" ); document.write( " \n" ); document.write( "

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