Do Exercise if it costs 10 cents per copy for the first 50 copies and 5 cents per copy for each copy exceeding 50, and there is no setup fee.
Revenue from Sales The owner of a photocopy store charges 7 cents per copy for the first 100 copies and 4 cents per copy for each copy exceeding 100. In addition, there is a setup fee of $2.50 for each photocopying job.
(a) Determine R(x), the revenue from selling x copies.
(b) If it costs the store owner 3 cents per copy, what is the profit from selling x copies? (Recall that profit is revenue minus cost.)
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