Final answer:
The best estimate for dividing – 18 1/4 by 2 2/3 is option C) – 18 – (-3), which simplifies to – 15.
Step-by-step explanation:
The question asks which expression best estimates – 18 1/4 divided by 2 2/3.
To estimate, we can round – 18 1/4 to – 18 and 2 2/3 to 3.
Dividing – 18 by 3 gives us – 6.
Therefore, the best expression to estimate this division is – 18 – (-3), which simplifies to – 18 + 3 = – 15.
The correct answer is option C) – 18 – (-3).