Final answer:
To evaluate f(x) = √(x−3) at x = 19, substitute 19 into the function to get f(19) = √(16), which simplifies to f(19) = 4.
Step-by-step explanation:
The student has asked to evaluate the function f(x) = √(x−3) at x = 19. To find f(19), we substitute 19 for x in the function and calculate the square root. The steps are as follows:
- Substitute x with 19: f(19) = √(19−3).
- Calculate the difference inside the square root: f(19) = √(16).
- Find the square root: f(19) = 4.
Therefore, f(19) = 4.