What’s the range of 27, 28, 34, 34, 40, 43, 47, 50

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’s the answer ? use the picture to see the problem

Which expression gives the exact value of x?