Subtract the following polynomials, then place the answer in the proper location on the grid. write answer in descending
powers of x.
3x^2 -5x + 12
5x^2 + x - 11

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.