## Stacks of DVDs

**Work Time**

# Stacks of DVDs

There are DVD cases and boxed sets of DVDs stacked on a shelf. The DVD cases are 14 millimeters thick and the boxed sets are 42 millimeters thick.

- Write an expression for the width of the stack on the shelf if the numbers of DVD cases and sets of DVDs are unknown.
- What is the width of a stack if there are 10 DVD cases and 5 boxed sets?
- What is the width of a stack if there are 32 DVD cases and 15 boxed sets?