BUSINESS: Mobile Phones Total mobile telephone users in recent years are given in th...

BUSINESS: Mobile Phones Total mobile telephone users in recent years are given in the following table.

a. Number the data columns with x-values 1–4 (so that x stands for years since 2006), use power regression to fi t a power curve to the data, and state the regression formula. [Hint: See Example 7.]

b. Use the regression formula to predict mobile phone users in the year 2015. [Hint: What x-value corresponds to 2015?]

Reference: See Example 7