Quote:

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 $\displaystyle x$ be the number of copies ordered and $\displaystyle C(x)$ 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