What is the interval notation for the compound inequality?
x≤−4 or x≥5
[−4,5]
(−4,5)
(−∞, −4] or [5, ∞)
(−∞, −4) or (5, ∞)

Step-by-step explanation:

3rd one

just give yourself some examples

 The correct notation is

(C) (−∞, −4] or [5, ∞).

Step-by-step explanation:  We are given to write the interval notation for the compound inequality :

x ≤ −4 or x ≥ 5.

We know that

the inequality x ≤ −4 can be written as (−∞, −4] and the inequality x ≥ 5 can be written as [5, ∞).

Therefore, in interval notation, the given inequality is written as

(−∞, −4] or [5, ∞)

Thus, the required notation is (−∞, −4] or [5, ∞).

Option (C) is CORRECT.

ab will be equal to

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.