Aiden bought some notebooks and book covers for the upcoming school year. He bought a total of 13 items. Each notebook cost $1.37, and each book cover cost $1.08. He spent a total of $16.36. How many notebooks and how many book covers did he buy?

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Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?