What’s the answer to this 3x=-27

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

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

Simplify the expression. -2/5(10+15m-20n)