Which is the discriminant of the quadratic equation 6x^2 + x -8=0?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Witch represents the inverse of the function f(x)=1/4x-12

When you dilate a figure with a scale factor of 1/2, what will the dilated figure look like?                                                                                           a: the dilated figure will have side lengths that are half the length of the original side lengths.                                                                          b: the angles in the dilated figure will be half the measure of the original figure.                                                                                c: the dilated figure will have side lengths twice the length of the original.