Question

For this arithmetic sequence 3, 8, 13, 18 … Which term of the sequence is 103?

a. 5
b. 90
c. 21
d. 20

Answer 1

D.

Explanation:

The formula for the sequence is 3+5i, so setting that to 103 we get

3+5i = 103

Subtract 3 from both sides, 5i = 100

Divide both sides by 5, and we get:

i = 20

Answer 2

C

Explanation: