Which statement best describes why this set of ordered pairs is not a function? {(1, 5),(2, 6),(3, 6),(4, 1),(4, 20),(5, 21),(6, 24

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer

Y+ 2/y is it a polynomial in one variable or not? and if so, why?