C: scatter plot is the graph used
First let's find out the total number of strikeouts, by adding the number of strikeouts of each person:

Now, to find the percentage of strikeouts that Samar is responsible, let's divide his number of strikeouts (5) by the total number of strikeouts (50):

So Samar is responsible for 10% of the strikeouts.
In the first one it the triangle ABC
It just changes the name of it and it rotated differently.
The answer is 644 bescause 23 times 4 is 92 and then 92×7 is 644