Simplify. is What?

125 · 24 ÷ 6 + (8 - 1)
A. 493
B. 509
C. 507
D. 500

To simplify the given expression, we need to follow the order of operations or PEMDAS (Parentheses, Exponents, Multiplication & Division, Addition & Subtraction).

Let's break down the expression and simplify it step by step:

1. Within the parentheses: (8 - 1) = 7

2. Simplify the multiplication and division from left to right:

125 · 24 = 3000 (multiply)
3000 ÷ 6 = 500 (divide)

3. Now, apply the addition and subtraction from left to right:

500 + 7 = 507

Therefore, the simplified expression is equal to 507.

So, the correct answer is C. 507.