What does it mean to find the value of an algebraic expression

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

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52