Answer:
F'(-4) does not exist
Step-by-step explanation:
find F prime by doing first derivative on the function F(t)
We can see that
[tex]F'= \frac{1}{2\sqrt{t+4}}\\[/tex]
At F'(-4), F' would equal [tex]\frac{1}{2\sqrt{-4+4}} = \frac{1}{0}[/tex], this is undefined, thus F'(-4) does not exist
