Annette plans to visit an amusement park where she must pay for admission and purchase tickets to go on the rides. annette wants to find the total cost for a day at the amusement park. she wrote the equation c=1.50x+12 to predict c, the total cost for a day at the amusement park. what could the number 12 represent in annette's equation?

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.