S+3/7=6

plz help I really need this

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

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7