Work out -8 - 8 i don’t understand this question

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?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.