Question: A study done by an advertising agency reveals that when x thousands of dollars are spent on advertising, it results in a sales increase in

A study done by an advertising agency reveals that when x thousands of dollars are spent on advertising, it results in a sales increase in thousands of dollars given by the functionS(x)= (x-10) + 40, for 0 x 10.

(a) Find the increase in sales when no money is spent on advertising.
(b) Find the increase in sales when $10,000 is spent on advertising.
(c) Sketch the graph of S1x2 without a calculator.

S(x)= (x-10) + 40, for 0 x 10.

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