14. What is Nth Rule of the sequence 7, 14, 21, 28? A. 7n. C. 6n + 1 B n + 7 D. 5n+2 Need kopo answer now,correct answer po please.. Created by jayvhierowin. Math

14. What is Nth Rule of the sequence 7, 14, 21, 28? A. 7n. C. 6n + 1 B n + 7 D. ...

PROBLEM:

What is nth rule of the sequence 7, 14, 21, 28?

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SOLUTION:

• We'll use the formula for arithmetic series. Thus, we need to identify the first term and the common difference.

• The common difference can be obtained when you try to subtract a particular term by its preceding term. Thus, our common difference is $\rm 21 - 14 = 7$ . The first term is obviously, 7.