Question

Use the graph to write the explicit rule of the arithmetic sequence.

Question 19 options:

A)

ƒ(n) = 9 + 2(n – 1)

B)

ƒ(n) = 5 + 3(n – 1)

C)

ƒ(n) = –3 + 2(n – 1)

D)

ƒ(n) = 3 + 2(n – 1)

Answer 1

Answer: D

Explanation:

The first term is 3 and the common difference is 2.

Substituting into the explicit formula for an arithmetic sequence gives D as the correct answer.