*Zappy Electric, Inc. makes and sells surge protectors. Their total cost function is C(x) = 4x + 2090 and their revenue function is R(x) = 15x. (a) How many surge protectors does Zappy need to sell to break even? Select an answer (b) What is Zappy's revenue at break-even? (c) What is Zappy's total cost at break-even? $

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