A company that manufactures bicycles estimates that the profit P (in dollars) for selling a particular model is given by P = -45x3 + 2500x² – 275,000, 0 < x < 50
where x is the advertising expense (in tens of thousands of dollars). Using this model, find the smaller of two
advertising amounts that will yield a profit of $800,000.

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.