Find the first four terms of the arithmetic sequence when a1 = 3 and d = 2.

An arithmetic sequence starts with a₁ = 3 and adds the common difference d = 2 each time. The first four terms are 3, 3 + 2 = 5, 5 + 2 = 7, and 7 + 2 = 9. So the correct choice is B) 3, 5, 7, 9.

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