Answer:
The fourth option with x values of -3,-2,4 and 7 is a function of x.
Step-by-step explanation:
This is due to it having only one of each x value.
On the other tables, they have multiple values for an x value. This means that it is not a function
Answer:

Step-by-step explanation:
<u>Step 1: Convert words into numbers
</u>

<u>Step 2: Multiply
</u>


<u>Step 3: Divide
</u>


Answer: 
Since the truck is 8 feet long then the longest log able to fit in the truck should be 8 feet as well. However talking reality, we might want to shorten it to make it fit better. Hope this helps!
The factors are 3 6 and 9