4(x+3)>24 find interval notation

Arandom high school question but a hard one

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?

Given: x - 4x > 0, then the solution set in interval notation is: (-2, 0) true o false