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Suppose soda is on sale for $.50 a can, and you have a coupon for $.80 off your total purchase. Write a function rule for the cost of N cans of soda
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Suppose soda is on sale for $.50 a can, and you have a coupon for $.80 off your total purchase. Write a function rule for the cost of N cans of soda

User Laurencevs
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If C is the cost and x the amount of cans.

C = 0.5x - 0.8

User Sergey Prokofiev
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