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

OPTION A.

Step-by-step 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:

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

Finally, substituting into  , you can express the total number of DVDs and CDs Armen owns in terms of the number of CDs:

19

step-by-step explanation:

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)