Help wit 3 and 4 for brainliest

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

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out