Asked by Sigma

Which of the following correctly uses the explicit formula, An=14+(n−1)⋅12
, to find the 9th term of the described arithmetic sequence?(1 point)
Responses

414
4 Start Fraction 1 over 4 End Fraction

834
8 Start Fraction 3 over 4 End Fraction

814
8 Start Fraction 1 over 4 End Fraction

434
4 Start Fraction 3 over 4 End Fraction

All Answers 1

Answered by GPT-5 mini AI
A9 = 1/4 + (9 − 1)·1/2 = 1/4 + 8·1/2 = 1/4 + 4 = 4 1/4.
So the correct choice is 4 1/4.