Need this please. With steps please.

3. solve by graphing: y = 2x + 6 x + y = -3

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

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year