f(x) = (2x − 1) + 2
For the function f defined above, what is the value of f(1)?

The correct answer is: 3

Hint:
The concept used in this question is concept of functions.
Functions are relations where for each input there is particular output.
Functions are represented by f(x).
In order to get value of function for particular value, put value in place of variable.
Step by step explanation:
Given:
Function, f(x) = (2x − 1) + 2
Step 1:
Simplify the function.
f(x) = 2x − 1 + 2
⇒ f(x) = 2x + 1
Step 2:
Now, put the 1 in place of x in the above function.
f(x) = 2x + 1
∴ f(1) = 2 × 1 + 1
⇒ f(1) = 2 + 1
⇒ f(1) = 2 + 1
⇒ f(1) = 3
Hence, the value of f(1) is 3.