What does the ordered pair (2, 30) tell you about the number of windows repaired?

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2