Michael is on page 28 of a 315 -page book. He must finish the book within the next 14 days. He solved the inequality 28 plus 14 p is less than or equal to 315 to find the minimum number of pages he must read per day to finish the book on time. What error did Michael make when he wrote this inequality to model the situation?

If p is the number of pages Michael reads each day, then after 14 days he will have read 28 + 14p pages. To finish the 315-page book, that total must be at least 315, so the inequality should be 28 + 14p ≥ 315. Michael used ≤, which would allow a total below the number of pages in the book. The correct choice is C: he should have used greater than or equal to.

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