Answer:
I don't understand the array of numbers as written in the question.
Step-by-step explanation:
See attached image
Option 4 is correct.
Enrollment at X = 0 is at 20.
Enrollment at X = 8 is 120.
Find the difference between those values:
120 - 20 = 100
Divide that difference by the difference in the x values:
100 /8 = 12.5
The answer is D. 12.5
Answer:common difference is 2.24
