How do you know a problem is linear or exponential?

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?