Check the continuity of the function f given by `f(x) = 2x + 3` at `x = 1`.

Explanation

To check the continuity of the function \( f(x) = 2x + 3 \) at \( x = 1 \), we need to verify three conditions:

1. The function \( f \) is defined at \( x = 1 \).
2. The limit of \( f(x) \) as \( x \) approaches 1 exists.
3. The limit of \( f(x) \) as \( x \) approaches 1 is equal to \( f(1) \).

### Step 1: Find \( f(1) \)

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