Answer:
k=69
Step-by-step explanation:
(plug in 69 instead of k)
69/3 = 23.
23+1=24
The ≥ sign means 21 has to be GREATER or EQUAL to 17.
Is it?
24≥17?
YES!
So, it works out.
Hope this helps.
If you still don't get it, just ask again, I'll explain it in more detail.
