Symbol
Problem
If $f$ $\left(t\right)=\left(3t+2\right)^{2}$ then $Ø\left(f\left(t\right)\right)=$ $\left(A\right)$ $\left(B\right)$ $\dfrac {3} {2}+2$ $6$ $2$ $\dfrac {9} {3}+-+-$ $8$ $12$ $4$ $-+-+-$ $18$ $-+\dfrac {8} {2}+$ $○$ $A$ $○$ $B$ $○$ $C$ $○$ $\square$