PLEASE HELP!!! 1) In 2000, there were 109 million cell phone users. The number of cell phone users grew to 300 million in 2010.

a) Write an exponential model that represents the number of cell phone users, where t represents the number of years after 2000.

b) What is the average rate of change?

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

Normal yağmur ile asit yağmuru arasındaki fark nedir

What does x = in this equation x+3+2x=x+5

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3