Answer:
All possible values for the number of tables that the store must sell in order to meet the requirements are 9, 10, 11, 12, 13.
Step-by-step explanation:
Let x be the number of chairs sold and y be the number of tables sold.
Chairs are sold for $50 each, then x chairs cost $50x.
Tables are sold for $250 each, then y tables cost $250y.
In total, x chairs and y tables cost $(50x+250y).
Every day, the store can ship no more than 36 pieces, then
![x+y\le 36](https://tex.z-dn.net/?f=x%2By%5Cle%2036)
Every day, the store must sell at least $3,400 worth of chairs and tables, then
![50x+250y\ge 3,400](https://tex.z-dn.net/?f=50x%2B250y%5Cge%203%2C400)
If 23 chairs were sold, then x = 23. Substitute it into the inequalities:
![23+y\le 36\Rightarrow y\le 13\\ \\50\cdot 23+250y\ge 3,400\Rightarrow 250y \ge 2,250,\ \ \ y\ge 9](https://tex.z-dn.net/?f=23%2By%5Cle%2036%5CRightarrow%20y%5Cle%2013%5C%5C%20%5C%5C50%5Ccdot%2023%2B250y%5Cge%203%2C400%5CRightarrow%20250y%20%5Cge%202%2C250%2C%5C%20%5C%20%5C%20y%5Cge%209)
Thus ![9\le y\le 13](https://tex.z-dn.net/?f=9%5Cle%20y%5Cle%2013)
This means all possible values for the number of tables that the store must sell in order to meet the requirements are 9, 10, 11, 12, 13.