Solve the Problem $x=a$ $f(x)=3 x^{2}, a=9$
A) 6
B) 27
C) -6
D) 54

Multiple Choice

Solve the problem.
-Compute the instantaneous rate of change of the function at at $x=a$ . $f(x) =3 x^{2}, a=9$ .

A) 6
B) 27
C) -6
D) 54