Lets break down each part of the problem. Since we have so set up an equation, sets translate the words into equations.
The first thing it mentions is a DVD is $19, so the cost of buying d number of DVDs is 19d. Likewise, if a CD is $14, the cost of buying c number of CDs is 14c. If we want to add the total number of DVDs and CDs we bought, it would be 19d + 14c. The next thing it tells us is we only have 65 dollars, so there is no way we can spend more than 65 dollars, so the only inequality would make sense is less than or equal to.
Our final equation will be:
19d + 14c <= 65
