Question

F(x)=x² +4 for f(-3)

please show work:)​

Answer 1

To find f(-3) for the function f(x) = x² + 4, substitute -3 for x and calculate: (-3)² + 4 equals 9 + 4, which simplifies to 13. Hence, f(-3) = 13.

Step-by-step explanation:

The student has asked for the evaluation of the function f(x) = x² + 4 for f(-3). To solve this, we simply need to substitute the value -3 in place of x in the function and then perform the calculation.

1. Start with the original function: f(x) = x² + 4.
2. Replace x with -3: f(-3) = (-3)² + 4.
3. Calculate the square of -3: f(-3) = 9 + 4.
4. Add 4 to the result: f(-3) = 13.

Therefore, f(-3) = 13, which is the final answer.