Audrey has the following t-shirts in her dresser drawer. She will randomly choose one t-shirt. Then she will replace it and choose a second t-shirt. What is the probability that she chooses a polka dot shirt and then a
striped shirt?
5 striped t-shirts
6 solid t-shirts
2 floral y-shirts
2 polka dot t-shirts

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

Given the equation    = 5, solve for x and identify if it is an extraneous solution

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?