How do you determine if 5x-7y=14 is a function?

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Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds