Answer:
C. [tex]f(-3)=\dfrac{-1}{3}[/tex]
Step-by-step explanation:
We are given the piecewise function as follows
[tex]f(x)=\left\{\begin{matrix}\dfrac{1}{x}, &x<-2 \\ \\x^2, & x\geq -2\end{matrix}\right.[/tex]
It is required to find the value of f(-3).
Since, we know that -3 < -2.
So, the function corresponding to x= -3 is given by,
[tex]f(x)=\dfrac{1}{x}[/tex].
Thus, we get,
[tex]f(-3)=\dfrac{1}{-3}=\dfrac{-1}{3}[/tex]
Hence, option C is correct.