Final answer:
To find the number of copies that were sold, set up an inequality using the sales of hardcover and paperback copies. The inequality is 22x + 15y ≤ 350.
Step-by-step explanation:
To find the number of copies that were sold, we can set up an inequality using the sales of hardcover and paperback copies. Let's assume x represents the number of hardcover copies sold and y represents the number of paperback copies sold. Since the shop had sales of the book of no more than $350, we can write the following inequality:
22x + 15y ≤ 350
This inequality states that the total cost of the hardcover copies (22x) plus the total cost of the paperback copies (15y) should be less than or equal to $350.
Thus, the inequality that shows the number of copies that were sold is 22x + 15y ≤ 350.