In order to design an appropriate touchscreen for a computer, the manufacturer has to consider the average size of the fingers and hands that will be touching the screen. One lab found that the average width of the index ( or pointing ) finger for adults is from 1.6 cm to 2 cm wide.

1. All the measurements on this page are inclusive. Explain what that means for the inequality symbols you will use.

2. Write the average width as an inequality using centimeters.

3. One centimeter = 0.39 inches. Write the average width as an inequality using inches.