Ask yourself this: "When is the graph completely horizontally flat?" The answer to this question is when x is between -4 and -2. This is where the graph is constant. All other intervals are either increasing or decreasing.

Saying "The graph is constant" basically means "constant rate of change", which is another way of saying that the graph isn't changing. Constant means it stays the same.

So this is why the answer is $-4 \le x \le -2$

Note how only choice A has both endpoints in the negative region, so it is a quick way to spot the answer.

3 0

2 years ago

Let f(x) = 3x + 8 and g(x) = x2<br> Find (f.g)(x).

puteri [66]

Answer:

You just plug it in.

Step-by-step explanation:

8 0

3 years ago

What is a counterexample of the following conjecture any number that is divisible by 3 is also divisible by 6

Bess [88]

Any odd multiple of 3 would be the counterexample of the given conjecture.

That is 3(2n - 1), for any natural number n, will be divisible by 3 but not divisible by 6 as 2 is not a factor.

<u>Examples:</u>

3(3) = 9

3(5) = 15

3(7) = 21 are some examples.

6 0

3 years ago