To express the situation where the average weight of the suitcases is 25 pounds and the maximum weight the plane can hold is 1,750 pounds, you would write the inequality based on the relationship:
The total weight of the suitcases (which is represented as 25 times the number of suitcases \( s \)) must be less than or equal to the maximum weight that the plane can hold (1,750 pounds).
This can be represented mathematically as:
\[ 25s \leq 1,750 \]
So the correct response is:
25s ≤ 1,750
(25 s is less than or equal to 1 thousand 750)