Question

Which represents how to find the nth term in this pattern?

A 5n + 2
B 5n + 7
C 7n - 2
D 7n + 5

Answer 1

Answer: b

Explanation:

First look for the difference between the terms, for example the sequence:

5, 8, 11, 14... has a difference of 3.

This means the sequence follows the 3 times table - i.e. 3n

Now since we need the first term to be 5 we add 2 to our rule to make it work.

So the nth term of this sequence is 3n + 2.