SOLUTION: the cost of cheese varies directly with the number of pounds bought.if 2 pounds cost $8.40,find the cost of3.5 pounds

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Question 414375: the cost of cheese varies directly with the number of pounds bought.if 2 pounds cost $8.40,find the cost of3.5 pounds
Answer by emargo19(101) About Me  (Show Source):
You can put this solution on YOUR website!
If 2 pounds of cheese cost $8.40
Then 3.5 pounds of cheese cost x dollars
pounds------------price
2-----------------8.40
3.5---------------x
%282%29%28x%29=%283.5%29%288.40%29
x=%28%283.5%29+%2A++%288.40%29%29%2F2
x=+14.7
Therefore 3.5 pounds of cheese cost $14.7.