I need this please help me

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.