Which diagram is not the graph of a function? Group of answer choices

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36