Answer:
5:8
Step-by-step explanation:
We don't know how much is the total, so 5:5+3
Seventh graders to total is 5:8
There's the graph
But the answer is x<9
X is all values below 9.
25% are girls
12 points
9 is 1.5 times 6, so 8 times 1.5 gives you the answer of 12 points.