A local photocopying store advertises as follows. " We charge 14 cents per copy for 150 copies or less,6 cents per copy for each copy over 150 but less than 230, and 3 cents per copy for each copy 230 and above. " Let x be the number of copies ordered and C(x) be the cost of the job (in cents ).

Question

If x ≤ 150, what is the the cost C(x) of the copies?

I don't know how to to do this because I can't figure out what the fixed overhead cost would be...please help

Answer 1

there is no fixed cost
C(x) = 14x for x<=150

Answer 2

Then what would the cost be for 150<x<230? I don't think there's a fixed cost for this either, but I don't think it'd be correct to write C(x) = 6x.