Help will give points

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

If m 17 27 90 63 ** picture is attached

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?