Find the vertex form
y = (x + 6)^2 - 45
or can be written as 
<h3>Further explanation</h3>
This is a question about the composition of functions and how to get a domain function.
Given
and
.
We will form (b o a)(x) and then determine the domain.
<u>Step-1</u>

Replace each appearance of x in b(x) with
.

Thus, 
<u>Step-2</u>
To be defined, the value under the radical sign must not be negative. Therefore, the domain of
are processed as follows.

Both sides added by 3.

Both sides divided by 3.

Thus, the domain of
is
or can be written as 
<h3>Learn more</h3>
- If f(x) = x² – 2x and g(x) = 6x + 4, for which value of x does (f o g)(x) = 0? brainly.com/question/1774827
- Solve for the value of the function composition brainly.com/question/2142762
- Look for rotation rules in the transformation brainly.com/question/2992432
Keywords: composition of function, if a(x) = 3x + 1, and, b(x) = √(x-4), what is the domain of, (b o a)(x), b(a(x)), defined, the value, under the radical sign, must not be negative,
Answer:
Step-by-step explanation:
Variance is the sum of squares of all items x from mean. i.e
Variance = 
Being the sum of squares variance can never be negative irrespective of mean being negative.
Std deviation is the square root of variances. This will thus be less than variance if variance >1 other wise std deviation will be bigger than variance.
Hence option d is right.
The correct answer is "all real numbers greater than or equal to 2".