What is the domain of the function represented by this graph?

the graph of a quadratic function y = x^2 – 4 with a minimum value at the point (0,-4)

A.
x ≥ 4
B.
x ≤ 0
C.
-2 ≤ x ≤ 2
D.
all real numbers

 D

Step-by-step explanation:

all real numbers

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2

the correct answers i think are b. and d.

give me brainliest if it is correct!