document.write( "Question 999285: A store sells 2 cans of coffee for $18.50. The cost of coffee varies directly with the number of cans. Write the proportional equation that represent the relationship between the cost of ground coffee y and the number of cans of coffee x \n" ); document.write( "
Algebra.Com's Answer #616955 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "coffee varies directly with the number of cans.
\n" ); document.write( "C = kc (C = Coffee: c = cans)
\n" ); document.write( "Using the values to establish 'k'
\n" ); document.write( "the constant of proportionality.
\n" ); document.write( "C = kc
\n" ); document.write( "$18.50 = k2
\n" ); document.write( "k = $18.50/2
\n" ); document.write( "k = $9.25
\n" ); document.write( "Equation
\n" ); document.write( "C = $9.25c
\n" ); document.write( "Hope this helps:-)
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