Question

An arithmetic sequence is shown below:

150, 100, 50, 0, -50, ....

Construct the explicit formula to represent the sequence above. (Rubric 1B)

ARITHMETIC SEQUENCE

an= a1 + (n−1)d

Answer 1

an= -50n +200

Explanation:

an = a1+(n-1)d=150-50n+50=-50n+200