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Answer:
- increasing on 0 < x < 2
- f(2) = 4
- decreasing on 2 < x < 5
Step-by-step explanation:
You need to know that an even function is symmetrical about the y-axis. The graph to the right of the y-axis is the mirror image of the graph to the left. With that in mind, the questions are easily answered.
It might help to draw the function graph, as we did in the attached. Then it is more straightforward to see what is happening in each of the intervals.
The function is increasing in the interval 0 < x < 2.
The function value at x=2 is 4: f(2) = 4.
The function is decreasing in the interval 2 < x < 5.
Answer: 1 brain
Step-by-step explanation:
If one person has a brain, the number of brains they have, x, is 1.
Then, upon giving a brain to another person, x decreases by 1, becoming 0.
Then, when given a brain, x increases by 1, settling at 0.
Hope it helps :)

It would be x=6 there’s the answer
8-4x=0
-4x=-8
x=2
you mean like this?
The original price is $4.50 because when you multiply it by 50% you get $2.25