Answer:
we would need to know what the experiment was or we can't awnser
The answer is negative 149
The discriminant of the equation

is 76.
I hope that helps.
Is point B.
Because √3≈1.7.
So it should be B.
80% of what is 56
0.80x = 56
x = 56 / 0.80
x = 70....so he attempted 70 free throws