The value of f(3) is 10
Explanation:
Given that the function rule is 
We need to determine the value of f(3)
<u>The value of f(3):</u>
The value of f(3) can be determined by substituting
in the function rule 
Thus, we have,

Simplifying the values, we get,

Adding the value, we get,

Thus, the value of f(3) is 10