Answer:
the correct answer is 3 times the difference of 62 and 42
The screen shot is the answer.
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the common difference is -1.4
Step-by-step explanation:
From 8.6 to 6.2 is a decrease of 1.4.
From 6.2 to 3.8 is also a decrease of 1.4.
And so on.
So the common difference is -1.4.
