Problem
Marc has a budget of $20 a month to spend on root beer and DVDs. The price of root beer is $5 a bottle, and the price of a DVD is $10.
Calculate Marc's real income in terms of root beer. Calculate his real income in terms of DVDs.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.