Ashtyn
1) Find a(4), in the sequence 3, 5, 7, ... a(4) = _

This is an example of an arithmetic sequence. First, we need to find common difference. (a(4) = the 4th term of the sequence).

5 - 3 = 2

7 - 5 = 2

Since the common difference is 2, we can just add this to a(3) to find teh 4th term.

7 + 2 = 9

Therefore, a(4) = 9.

Best of Luck!

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