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Find the 15th term of the arithmetic sequence. a+1, 2a+1, 3a+1 a. a+15 b. 15a+15 c. 15a + 1 d. 14a+14
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Find the 15th term of the arithmetic sequence.

a+1, 2a+1, 3a+1
a. a+15
b. 15a+15
c. 15a + 1
d. 14a+14

User Ijoseph
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7.1k points

2 Answers

3 votes
The answer is
c. 15a + 1
User Chpn Dave
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6.8k points
5 votes
It's all about matching patterns.

The coefficient of "a" in the given sequence is the term number (1, 2, 3, ...) and the constant remains constant at 1. Thus the 15th term can be expected to be ...
c. 15a + 1
User Amin SCO
by
6.5k points
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