The table shows the number of cameras sold (in millions) by Candid Camera Co. in the years 2000 - 2006.

Year (t) 2000 2001 2003 2005 2006

Cameras Sold (in millions) (y) 6.3 6.2 5.7 4.9 4.7

(a) Taking x = 0 to be the year 2000, find an equation for the linear regression line

(b) For your regression line, interpret the meaning of the slope.

(d) Use your regression line to predict the quantity of cameras sold in 2007.