Select the correct answer.

What is the domain of [tex]$f(x) = 2x - 1 + 3$[/tex]?

A. [tex]$x \geq 2$[/tex]
B. [tex][tex]$x \geq 1$[/tex][/tex]
C. [tex]$x \leq -1$[/tex]
D. [tex]$x \in \mathbb{R}$[/tex]



Answer :

Let's analyze the given function and the options provided to find the correct answer.

The given function is:
[tex]\[ f(x) = 2x - 1 + 3 \][/tex]

Let's simplify this expression:

1. Combine the like terms:
[tex]\[ 2x - 1 + 3 = 2x + 2 \][/tex]

Now, we need to determine the common characteristic or condition that fits the simplified function.

Next, we review the options given:
A. [tex]\( |x| x = 2 \)[/tex]
B. [tex]\( |x| x = 1 \)[/tex]
C. [tex]\( |x| x \leq -1 \)[/tex]
D. [tex]\( (x) x = \text{ai ncal narnsainil} \)[/tex]

From the simplified expression [tex]\( f(x) = 2x + 2 \)[/tex], we need to see which option correctly describes the function in some way.

Looking at the correct answer based on our analysis, we can see option D could be interpreted differently. However, if we evaluate the options more deeply:

- Option A ([tex]\( |x| x = 2 \)[/tex]) does not directly relate to the simplified form [tex]\( 2x + 2 \)[/tex].
- Option B ([tex]\( |x| x = 1 \)[/tex]) also does not fit [tex]\( 2x + 2 \)[/tex].
- Option C ([tex]\( |x| x \leq -1 \)[/tex]) is an inequality statement about [tex]\( x \)[/tex], not directly matching [tex]\( 2x + 2 \)[/tex].

Thus, through process of elimination and understanding the options, D seems correct in the context given.

Therefore, the correct option is:
[tex]\[ (x) x = \text{ai ncal narnsainil} \][/tex]

So, the correct answer is D.