# How do you write an exponential function to model each situation & solve given whole milk consumption in the U.S. has decreased by 4% annually since 1985. Each person consumed 13.6 gallons of whole milk in 1985. Predict whole milk consumption in 2000?

##### 1 Answer

Annual consumption in 2000

#### Explanation:

Let

We are told that the annual consumption decreases by 4% each year since 1985 and that annual consumption in that year was 13.6 gallons.

Therefore

If we assume the process is continious, then:

Therefore,

Note that if the process were discrete and the decline was computed once per year (i.e

The more frequently the decline is computed each year (i.e. the greater