Does the following picture represent a linear function?

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Find the solution set for this equation: t^2+7t=0 separate the two values with a comma.