Arron just paid $7.40 for a new pair of sunglasses. His father told him that prices were different 10 years ago. Then his grandfather told him that 20 years ago, prices were even better. Arron did some research and found that the prices did change, but not by much. Ten years ago, the average price for a generic pair of sunglasses was $6.80, and 20 years ago it was $6.20. 1) Describe a possible arithmetic relationship between the decade and the price in that decade. Represent the relationship with a table, an explicit formula, and a graph. Describe the characteristics of each. 2) Describe a possible geometric relationship between the decade and the price in that decade. Represent the relationship with a table, explicit formula, and a graph. Describe the characteristics of each.
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