The explicit rule for the arithmetic sequence is a(n) = 9.5 + 2(n -1) option third is correct.
What is a sequence?
It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.
We have a arithmetic sequence:
9.5, 11.5, 13.5 , 15.5....
Common difference d = 11.5 – 9.5 = 2
First term = 9.5
Explicit rule:
a(n) = 9.5 + (n-1)(2)
a(n) = 9.5 + 2(n -1)
Thus, the explicit rule for the arithmetic sequence is a(n) = 9.5 + 2(n -1) option third is correct.
Learn more about the sequence here:
brainly.com/question/21961097
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