Here are two equations:
m(x) = x (x + 6)
p(x) = (x + 3)^2 - 9

1) How are both expressions equivalent?

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Find the axis symmetry of x y=4x-6x+3

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?