Please help I'm timed! Which number is a solution of the inequality x less-than negative 4? Use the number line to help answer the question.

A number line going from negative 9 to positive 1.
–3
0
21

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

2+2 obliviously is 4.