Answer: 0.4 which is choice C
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Work Shown
Focus on the "riverside high school" row only
A = number of twelfth graders = 200
B = number of students = 500
P = probability of picking a twelfth grader
P = A/B
P = 200/500
P = 2/5
P = 0.4
X= -4; f(x)= -15
X= 2; f(x)= 3
X=5; f(x)= 12
Answer:
A: Rectangle is the correct answer
