Arock breaks loose from a cliff and plunges toward the ground 400 feet below. the distance "d" that the rock falls in "t" seconds is given by the equation d=16t^2. how long does it take the rock to hit the ground?

The graph of the function f(x) = (x + 2)(x + 6) is shown below. which statement about the function is true? the function is positive for all real values of x where x > –4. the function is negative for all real values of x where –6 < x < –2. the function is positive for all real values of x where x < –6 or x > –3. the function is negative for all real values of x where x < –2.