A department store has two locations in a city. From 2008 through 2012, the profits for each of the store’s two branches are modeled by the functions f(x) = −0.44x + 13.62 and g(x) = 0.51x + 11.14. In each model, x represents the number of years after 2008, and f and g represent the profit, in millions of dollars.
a. What is the slope of f? Describe what this means.
b. What is the slope of g? Describe what this means.
c. Find f + g. What is the slope of this function? What does this mean?
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