Which symbol in place of the question mark makes the inequality 2x ? 20 true for the solutions 10, 11, and 12? Note: you will find the option to add a < , > , ≤ , or ≥ symbol in the Comparison (<) keyboard.

The correct symbol to make the inequality 2x ? 20 true for the solutions 10, 11, and 12 is ≤ (less than or equal to).

Therefore, the correct inequality is: 2x ≤ 20.