E. After spending $200 on market research, you discover that you can sell many more copies of your book if you price it at $20. Write new functions for both your expenses and
your income from selling x copies.
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f. Use an online graphing tool to graph the two functions you wrote in part

d. Examine the
graph and estimate the minimum number of copies of your book you must print and sell to
avoid losing money. Capture a screenshot of your graph and include it with your answer.
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g. Solve the system of equations you derived in part d to find the exact number of copies
(rounded up to the nearest whole number) you need to sell to avoid losing money.
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