Determine if the two functions f and g are inverses of each other algebraically. If not, why not?

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.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0