Evaluate the function f(x) = -x2 + 5 for x = 4

I'm assuming the question says f(x)=-x^2+5 in which case you substitute 4 in for x:

f(4)=-(4)^2+5=-16+5=-11

To evaluate the function f(x) = -x^2 + 5 for x = 4, you need to substitute x with 4 in the function and compute the result.

First, replace x with 4 in the function:

f(4) = -(4^2) + 5

Next, calculate 4^2:

4^2 = 16

Now substitute this value back into the equation:

f(4) = -(16) + 5

Since -16 plus 5 is -11, the final answer is:

f(4) = -11

So, the value of the function f(x) = -x^2 + 5 for x = 4 is -11.