Yes, because the sample is random. If she had chosen the participants in any way other than randomly, it would not be representative of her entire school.
350 because of the concert I’m just kindling I need points
Create and solve an appropriate equation: Maria's earnings = Liam's earnings
0.20x = $625+0.10x.
Find x.
0.10x = $625; thus, x = $6250. At this level of food sales, these two people earn the same amount.