Question

http://prntscr.com/57smg6

Answer 1

Not quite. The 8 and 1 fit, but the other pair does not

Answer 2

First thing you should do is simplify it.

Answer 3

\[
\begin{split}
3xy+9&=&33\\
3xy&=&24\\
xy&=&8
\end{split}
\]It's not to hard to determine whether \(x\times y=8\).

Answer 4

For the first choice: \[
(1)(11)=11\neq 8\quad\text{and} \quad (2)(6)=12\neq 8
\]