Mr. Swanson needs new strings for his 19 violin students. Each violin has 4 strings. Strings are $2 each and come in sets of 4. Mr. Swanson decides to buy 2 sets of strings for each student.

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36