A local photocopying store advertises as follows. " We charge 11 cents per copy for 350 copies or less, 7 cents per copy for each copy over 350 but less than 400 , and 4 cents per copy for each copy 400 and above. " Let x be the number of copies ordered and C(x) be the cost of the job (in cents ).
If x≤350, the cost of the copies is C(x)=_______________ cents
If 350<x<400, the cost of the copies is C(x)=________________ cents
If x≥400, the cost of the copies is C(x)=________________ cents
Hello, spyder12!
You may be able to talk your way through this problem.
(There's one "border" where the reasoning is tricky.)
A local photocopying store advertises as follows.
. . "We charge 11 cents per copy for 350 copies or less,
. . 7 cents per copy for each copy over 350 but less than 400,
. . and 4 cents per copy for each copy 400 and above."
Letbe the number of copies ordered and
be the cost of the job (in cents ).
If x ≤ 350, the cost of the copies is C(x) = ____ cents
If 350 < x < 400, the cost of the copies is C(x) = ____ cents
If x ≥ 400, the cost of the copies is C(x) = ____ cents
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