Need help... plz.

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Nikolas calculated the volume of the prism. his work is shown below.