Which of the follows is not a function?

What is the greater volume 72 quarts or 23 gallons

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x