Question

The number of music CDs that Carl has in his collection is four less than triple the number of music CDs that Toni has in her collection. Define variable expressions for the number of music CDs that Carl and Toni have.

Let Tonis CD’s = x
How do I write an expression using x as the variable?

Answer 1

Ok, simple.
Carl has 4 less than triple the amount Toni has.
Toni has x amount of CDs.
Carl has 3x - 4 amount of CDs.

Hope this helps!