Hi there! The answer is k = 16
To find our answer we only need to collect the terms. In other words: we need to subtract all the values of k.
Example:

If you don't get this, you can try to understand it by using a story: in a cage, there are 18 koalas, 11 of them leave. How many are left?
18 koalas - 11 koalas = 7 koalas
18 k - 11 k = 7 k
Now we keep doing this again and again to find our final answer:

~Hope this helps you!
Answer:
Car A. would travel the farthest
Answer:
ohh what this
Step-by-step explanation:
Answer:
a) see below
b) 40x20 meters
Step-by-step explanation:
Write down what you know:
- The area of the enclosure is length*width, so

- The length of the fencing is 80 meters, so

Now we have to combine these two equations above, and get rid of y in the process.
First rewrite the second as:

Then substitute for y in the first:

b) To maximize A, find the zero of the first derivative:

So y = (80-40)/2 = 20 meters.