SOLUTION: 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 c

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: 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 c      Log On


   

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
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
coffee varies directly with the number of cans.
C = kc (C = Coffee: c = cans)
Using the values to establish 'k'
the constant of proportionality.
C = kc
$18.50 = k2
k = $18.50/2
k = $9.25
Equation
C = $9.25c
Hope this helps:-)