Answer: 3.5
Step-by-step explanation:
Answer:
a) "ascend"
Step-by-step explanation:
a)
The equation is 
This question is asking for the value of the directional derivative in the direction of -j [since south that's y negative]
So, this is the negative of partial derivative of y. Thus we have:

Now we are at (100,120,1106), we take y value of 120 and put it in the partial:

We take the negative, that is -(-2.4) = 2.4
Since this is positive, we can say the hill is sloping upward at this point, so you will start to ascend.
Do you have to find the area or perimeter?
-3x, -x + 1/2, 2x, 10x if you need anything else feel free to ask. I would like brainliest but if not its ok