What is the sum of 1/2 and 1/4?

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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

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?