D=dvds and g=games solve for 2d+3g=15.50 and 3d+1g=12.05

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?

Ineed no it anyone can see this

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.