Question

Li Jun decides to model the rate at which the number of cavities a person has changes as the volume of acidic beverages the person drinks increases. What would be an appropriate unit for Li Jun's purpose?

A: pH/ liter
B: cavities/ year
C: cavities/liter
D: pH/ year

Answer 1

C: cavities/liter

Explanation:

Li Jun is measuring the number of cavities a person has as compared to the volume of acidic beverages the person drinks.

An appropriate unit for the number of cavities is cavities.

An appropriate unit for the volume of drink is liter.

This makes an appropriate unit for the rate would be cavities/liter.

Answer 2

Answer B is wrong the correct answer is C. Cavities/ liter