2. Given that $a, b$ are integers and the determinant $\left| \begin{array} { c c } 5 & a \\ b & 7 \end{array} \right| = 4$, what is the absolute value $|a + b|$? (1) 16 (2) 31 (3) 32 (4) 39 (5) Insufficient information to determine
& 3 & & 14 & 8 & & 24 & 0
2. Given that $a, b$ are integers and the determinant $\left| \begin{array} { c c } 5 & a \\ b & 7 \end{array} \right| = 4$, what is the absolute value $|a + b|$?\\
(1) 16\\
(2) 31\\
(3) 32\\
(4) 39\\
(5) Insufficient information to determine