The given expression : f(x) = - x - 5
to find the value of f(x) at x = (-3)
Substitute the value of x = (-3)
[tex]\begin{gathered} f(x)=-x-5 \\ at\text{ x = (-3)} \\ f(-3)=-(-3)-5 \\ f(-3)=3-5 \\ f(-3)=(-2) \end{gathered}[/tex]So, at x = (-3), f(x) = (-2)
Answer : f(x) = (-2)
