Chapter 4.1, Problem 17E

Reminder Round all answers to two decimal places unless otherwise indicated.

Mobile Phones According to one source, the amount of data passing through mobile phone networks doubles each year.

a.	Explain why the amount of data passing through mobile phone networks is as exponential function of time.
b.	Use $D_0$ for the initial amount of data, and find a formula that gives the data $D$ as an exponential function of the time $t$ in years.
c.	If this trend continues, how long will it be before the amount of data is $100$ times its initial value?