Answer :
Check each option to see if it satisfies both conditions:
1.- x≤180
2.- x+y≤400
Remember that x represents regular cars and y represents compact cars.
170 regular, 260 compact.
Then, x=170 and y=260
[tex]\begin{gathered} 170\le180\Rightarrow x\le180 \\ 170+260=430>400\Rightarrow x+y>400 \end{gathered}[/tex]The second condition is not satisfied.
175 regular, 225 compact
Then, x=175, y=225
[tex]\begin{gathered} 175<180\Rightarrow x<180 \\ 175+225=400\Rightarrow x+y=400 \end{gathered}[/tex]Both conditions are satisfied, then this option is correct.
210 regular, 190 compact
Then, x=210, y=190
[tex]undefined[/tex]