In 2003, online holiday sales were $17 billion, and in 2006, they were $26 billion.

(a) find a linear function s that models these data, where x is the year.
(b) interpret the slope of the graph of s.
(c) predict when online holiday sales might reach $41 billion.

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?

Find an equation of the line that has intercepts (1,0) and (0,4).

Which statement describes the slope of the line?