What the answer using quadratic formula

What could explain what happened when the time was equal to 120 minutes

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Will possibly give brainliest and a high rating. choose the linear inequality that describes the graph. the gray area represents the shaded region. 4x + y > 4 4x – y ≥ 4 4x + y < 4 4x + y ≥ 4