Question

What are the next three terms in the sequence 0.4, 0.9, 1.4, 1.9, ...?

Answer 1

0.4, 0.9, 1.4, 1.9

How much do you add to get from 0.4 to 0.9? 0.5. How about from 0.9 to 1.4? 1.4 to 1.9? All 0.5.

This is a pattern, meaning we can use it to find the next terms.

What is 1.9 plus 0.5? 2.4.

Now, 2.4 plus 0.5? 2.9.

How about 2.9 plus 0.5? 3.4.

So, your next three terms are 2.4, 2.9, and 3.4.