\begin{equation*}
P(A \cap B) = P(A) P(B).
\end{equation*}
Using the provided values, notice that
\begin{equation*}
P(A \cap B) = 0.31
\end{equation*}
but
\begin{equation*}
P(A)P(B) = 0.43 \cdot 0.72 = 0.3096.
\end{equation*}
Since these are not equal (regardless how close) then A and B are not independent.