If f (x) = 3 (x + 4), find f (2).

729

243

81

18

The answer is 18.

Just replace the x with 2

f (2) = 18

Option 4 is correct

Step-by-step explanation:

Given: f (x) = 3 (x+4)

To find: f (2)

The given function is linear function with variable x to find the value of function at x=2

So, put x=2 into the function and simplify it

f (x) = 3 (x+4)

f (2) = 3 (2+4)

f (2) = 3 (6) [ multiply 3 and 6 = 18]

f (2) = 16

Hence, The value of f (2) is 18 of the given function.