The cost for 6 CDs and 2 DVDs cost $147.68.
To answer this, you have to find the cost of each item. This can be done by solving a system of equations.
Our system could be:
C = D + 5.96
5C + 2D = 147.68
Solving this gives you that:
C = 19.95
D = 13.99
Now, just plug those into the equation below and you will have your answer:
6C + 2D