Which of the following correctly uses the explicit formula, An=1/4+(n−1)⋅1/2 , to find the 9th term of the described arithmetic sequence?(1 point)
Responses
A) A9 = 1/4 + (9-1)*1/2
B) A9 = 1/4 + (9+1)*1/2
C) A9 = 1/4 + (9-1)*1/4
D) A9 = 1/4 + (9-1)*1/3
The correct answer is A) A9 = 1/4 + (9-1)*1/2.