The correct illustration is:
An illustration shows a number line labeled Maeve’s Earnings Each Weekend. The number line ranges from 0 to 2,000 in 500 unit increments. A closed point is plotted at 1,250. An arrow extends from that point to the right and goes beyond 2,000.
This is the correct representation because it shows that Maeve needs to earn at least $1,250 by the end of the summer, and the arrow extending beyond 2,000 indicates that there is no upper limit to how much she can earn each weekend.