Answer:
z is greater than or equal to -14.4
Step-by-step explanation:
First, move 6.4 to the other side:
-8 -6.4 ≤ z
Then add the like terms:
-14.4 ≤ z
Then, flip it so z is on the left. But the less than or equal to sign will now be a greater than or equal to sign because of the flip.
z is greater than or equal to -14.4
(I don't have the greater than or equal to sign. I just have the less than or equal to sign because I copy-pasted it from your question)
To graph it, make a number line.