The cost of a ticket t to a concert with a 3% sales tax can be represented by the expression t + 0.03t. simplify the expression. then determine the total cost after the sales tax if the original price is $72.

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.