Plz help me if someone gets this right you will get brainilist award.

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?

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0