You can buy 2 dvds for the same price a you would pay for 3 cds selling for $13.20 apiece. explain how you could find the price of 1dvd.

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

What percent of 18 is 24? and plz explain thx.

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).