33 points! ! use substitution to find the solution(s) to the system. -3x+12y=54 x-4y=-18 a) (-6, -1) b) (-3, -1) c) no solutions d) infinite solutions

What value of x is in the solution set of –5x – 15 > 10 + 20x?

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

Evan went to the park and saw for animals each animal was either a duck or dog if he saw a total of 14 legs how many of each animal did he see