In 2011 online sales were $192 billion and in 2014 they were $243 billion (a) Find a linear function S that models these data, where S is the sales in billions of dollars and is the year Write S(x) in slope-intercept form
(b) Interpret the slope of the graph of S
(c) Determine when online sales were $226 billion

(a) Write S(x) in slope-intercept form S(x)=

(b) Interpret the slope of the graph of S Choose the correct answer below

A .Sales increased on average by $17 billion/yr B .Sales increased by $17 billion in next 3 years C. Sales decreased an average by $17 billion/y D. Sales decreased by $17 billion in next 3 years

(c) Online sales were 5226 billion in the year ___