SOLUTION: Nola purchased 2.5 pounds of cheese for $10.50. Her mother purchased 3 pounds of the same cheese for $12.60. The cost of cheese varies directly with the number of pounds purchased.

SOLUTION: Nola purchased 2.5 pounds of cheese for $10.50. Her mother purchased 3 pounds of the same cheese for $12.60. The cost of cheese varies directly with the number of pounds purchased.

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Question 920943: Nola purchased 2.5 pounds of cheese for $10.50. Her mother purchased 3 pounds of the same cheese for $12.60. The cost of cheese varies directly with the number of pounds purchased. How much does one pound of cheese cost?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
(3, 12.6)
(2.5, 10.5) m = = 2.6/.5 = 5.2
y - 10.5 = 5.2(x - 2.5)
y = 5.2x -2.50
x = 1
y = 2.70 per lb
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