Evaluate the expression. \[ -9 \div-1 \times-10-8 \]

Let's break down the expression step by step. We start with the expression: \[ -9 \div -1 \times -10 - 8 \] Following the order of operations (PEMDAS/BODMAS), we first handle the division and multiplication from left to right. 1. Evaluate \( -9 \div -1 \): \[ -9 \div -1 = 9 \] Now, our expression looks like this: \[ 9 \times -10 - 8 \] 2. Next, we evaluate \( 9 \times -10 \): \[ 9 \times -10 = -90 \] Now the expression simplifies to: \[ -90 - 8 \] 3. Finally, we subtract: \[ -90 - 8 = -98 \] Thus, the final result of the expression is: \[ \boxed{-98} \]