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The amount of energy it takes to lift a box might be a function of which of the following

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

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)