Chapter 1.4, Problem 15E

Mobile Broadband Subscriptions The following table shows the number of mobile broadband subscribers worldwide (x is the number of years since 2010):⁶²

Year x	0	2	4
Subscribers y (millions)	800	1,600	2,300

Complete the following table, and obtain the associated regression line. (Round coefficients to one decimal place.) [HINT: See Example 2.]

	x	y	xy	$x^2$
	0	800
	2	1,600
	4	2,300
${\displaystyle \sum \left(\text{Sum}\right)}$

Use your regression equation to project the number in 2016.