Question

Armen owns 12 fewer DVDs than CDs. Let c represent the number of CDs Armen owns. Express the total number of DVDs and CDs Armen owns in terms of the number of CDs, c. A)c + c - 12 B)c + c + 12 C)12 - c D)c - 12

Answer 1

Answer: OPTION A.

Explanation:

Let be "c" the number of CDs Armen owns and "d" the number of DVDs Armen owns.

Then, the expression for the total number of DVDs and CDs Armen owns is:

`d+c`

You know that Armen owns 12 fewer DVDs than CDs, then, you can write the following expression:

`d=c-12`

Finally, substituting
`d=c-12` into
`d+c`, you can express the total number of DVDs and CDs Armen owns in terms of the number of CDs:

`c+c-12`