Help please! This is a quiz!

Ineed if you could explain and give me the answer you! this needs done

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

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.