# To write a function f describing the average cost of sealable books. Given information: The printing and binding cost for a college algebra book is $10. The editorial cost is$200,000. The first 2500 books are free.

Question
Upper level algebra
To write a function f describing the average cost of sealable books.
Given information:
The printing and binding cost for a college algebra book is $10. The editorial cost is$200,000. The first 2500 books are free.

2021-02-26
Calculation:
Let the number of books be x. Since the printing and blinding cost for a college algebra cost is $10. The printing and blinding cost for 10 algebra books is 10x. The editorial cost is$200,000. The first 2500 books are free.
Thus, the average cost of sealable books is
$$\displaystyle{f{{\left({x}\right)}}}={\frac{{\to{t}{a}{l}\ {\cos{{t}}}}}{{\nu{m}{b}{e}{r}\ {o}{f}\ {s}{e}{a}{l}{a}{b}\le\ {b}\infty{k}{s}}}}$$
$$\displaystyle{f{{\left({x}\right)}}}={\frac{{{10}{x}+{200},{00}}}{{{x}-{2500}}}}$$
Hence, the required function is $$\displaystyle{f{{\left({x}\right)}}}={\frac{{{10}{x}+{200},{00}}}{{{x}-{2500}}}}$$.

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