1) In 2000, there were approximately 109 million cell phone users in the United States. The number of cell phone users grew to approximately 189 million after one year. a) Write an exponential model that represents the number of cell phone users in the United States, where t represents the number of years after 2000.

[2]

[1]

b) What is the average rate of change?

[1]

c) What would be the number of cell phone users in 2020?

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation:

yes

step-by-step explanation:

yes

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it