The point P(1, 1/3) lies on the curve y = x/(2 + x). If Q is the point (x, x/(2 + x)), use a scientific calculator to find the slope of the secant line PQ (correct to six decimal places) for the following values of x.

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.