5x+8y≥1200 amount of money earned has to be more than or equal to 1200
x+2y≤500 the number of people has to be less than or equal to 500
An easy way to select a good point is by graphing the system into desmos, and then select a point that makes sense. Remember what x and y represent: it doesn't make sense for x or y to take a negative value.
One possible solution point is (0,250), 250 couples which makes for a total of 500 people and a total of $2000 since (8)(250)=2000.