Answer:
Step-by-step explanation:
We'll start by looking at the difference between 9 and -8.
To get from 9 to -8, we can see that we need to subtract 17.
Now, let's see if we can subtract 17 each time to get the next terms.
To get from -8 to -25, we can see that we must subtract 17 again.
Looks like the difference is -17, but let's check once more to see if we are correct.
To get from -25 to -42, we must subtract 17 again.
Therefore, d = -17
Hope this helped!
