With computer security always a hot-button issue, demand is growing for technology that authenticates and authorizes computer users. The following table gives the authentication software sales (in billions of dollars) , including projections, from 1999 through 2004. 
(Here, x = 0 represents 1999.) Find an equation of the least-squares line for these data. Please round the coefficients in your equation to three decimal places. Use the result to estimate the sales for 2008, assuming the projection is accurate.
Definitions:
Rods
Photoreceptor cells in the retina that are highly sensitive to light and enable vision in low-light conditions.
Cones
Photoreceptor cells in the retina of the eye, responsible for color vision and functioning best in bright light.
Dim Light
A low level of illumination, often creating a subdued or intimate atmosphere.
Fine Detail
The minuscule and precise elements or features of an object or situation.
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