Question

Use the explicit formula a n = 4 - 3n to find the seventh term of the arithemic sequence.
A. a7 = -17
B. a7 = 1
C. a7 = 7
D. a7 = -1

Answer 1

To find the seventh term of the arithmetic sequence, we can substitute n = 7 into the explicit formula:

a7 = 4 - 3(7)
a7 = 4 - 21
a7 = -17

Therefore, the seventh term of the arithmetic sequence is -17.

The answer is A. a7 = -17.