Question

tell whether the sequence is arithmetic. If it is, what is the common difference? -12, -7, -2, 3, ...

Answer 1

Yes, 5

Explanation:

We see a difference in every single number as we go to the right. We see that
`-7 = -12 + 5`,
`-7 = -2 + 5`, etc. So, the common difference is
`\boxed{5}`.