A bag contains 50 marbles 10 which are blue 15 or red 15 or green and 10 or purple Shawna takes a marble out of the bag Records the color and returns it to the bag how many green marble should she expect after 200 trials

Ci think but i'm not entirely sure so..

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.