Answer:
2
Step-by-step explanation:
The grandfather would be your parents.Hope it helps :)
The correct answer to this problem would be -3. Based on the points you've provided on the graph, -3 would be the correct common difference. :)
Answer:
2.71428571429
Step-by-step explanation:
calculator, counted it myself too to check if it's right
2.71428571429
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