I need help with D and E

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?

Give all possible names for the line shown.calculation tip: lines can be written with either point first.

Complete the steps to find 4.830 ÷ 5