To express the situation where you want to find out how many suitcases averaging 25 pounds each can be loaded onto a plane with a maximum capacity of 1,750 pounds, you would set up the following inequality:
Let \( s \) represent the number of suitcases. The total weight of the suitcases would be \( 25s \) (since each suitcase weighs 25 pounds). The plane can hold a maximum of 1,750 pounds, so you can write the inequality as:
\[ 25s \leq 1,750 \]
This means that the total weight of the suitcases must not exceed the maximum capacity of the plane. Therefore, the correct answer is:
25s ≤ 1,750