According to the Rational Root Theorem, the following are potential roots of f(x) = 2x2 + 2x – 24. –4, –3, 2, 3, 4

Which are actual roots of f(x)?
–4 and 3
–4, 2, and 3
–3 and 4
–3, 2, and 4

Suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a standard deviation of 2.6. find the probability that a given infant is between 14.8 and 25.2 inches long.