# The number of U.S. smartphone users (in millions) t years after 2010 is given by (a) What is the growth

## Question:

The number of U.S. smartphone users (in millions) t years after 2010 is given by

(a) What is the growth rate in the number of U.S. smartphone users?

(b) Use a graphing utility to graph P = P(t).

(c) What was the number of U.S. smartphone users in 2015?

(d) In what year does the number of U.S. smartphone users reach 280 million?

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**Related Book For**

## Precalculus Concepts Through Functions A Unit Circle Approach To Trigonometry

**ISBN:** 9780137945139

5th Edition

**Authors:** Michael Sullivan

**Question Details**

Chapter #

**4**Section: EXERCISE 4.8

Problem: 22

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