In DEF, C is the centroid. if DM = 57, find DC and CM

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

I’m confused on how to work the pie charts