I believe the answer is x=24
The answer is 31.832142857.
Okay well, if you make a graph, Point A (7,0) and Point B (4,6) are in the top right quadrant. and Point C (1,1) and Point D (5,3) are in the top left, top right, and bottom left quadrant (I'll link a photo of the graph.)
so the lines intersect and make it perpendicular
3+1=h i beev this because you are adding the amount of adults to children then that would get you to h
PART A
rectangle : circle
5:13
PART B
5x3 : 13x3
15 : 39
Hope this helped! :)