Solve the problem.Suppose that a sales person observes that if an item is priced at $4 per item then 7 items are sold. If 5 items are sold for $6 per item then find an equation to model the number y of items sold for x dollars per item.
A. y = x + 3
B. y = x + 11
C. y = -x + 11
D. y = -x + 3
Answer: C
Mathematics
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