The document you uploaded contains a series of practice problems and examples involving evaluating mathematical expressions. Here are a few examples of the types of problems found:

1. Basic Arithmetic and Algebraic Expressions:

   • $35 - 3 \times 8$
   • $18 + 9 + 2 \times 6$
   • $(11 \times 7) - 9 \times 8$

2. Expressions with Variables:

   • $g + 6t$ where $g = 2$, $t = 11$
   • $t^2 + 8rt + r^2$ where $g = 2$, $r = 3$, $t = 11$

3. Geometry-related Expressions:

   • Finding the area of a triangle using an algebraic expression.

4. Real-world Applications:

   • Calculating the number of amusement parks in 2009 after a decrease from 2004.
   • Evaluating ticket sales expressions based on different ticket prices.

5. Complex Expressions:

   • $3g(g + r)^2 - 1$ where $g = 2$, $r = 3$
   • $25 + \left[\frac{(16 - 3 \times 5) + 12}{3}\right]$

Would you like to work through a specific problem, need further details on a specific section, or have any questions?

Here are some related questions you might explore next:

1. How do you simplify expressions with both multiplication and addition?
2. What is the order of operations, and how does it affect expression evaluation?
3. How do you evaluate expressions with variables?
4. How do you derive expressions for real-world scenarios?
5. What are common mistakes to avoid when simplifying complex expressions?

Tip: Always follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)) when evaluating expressions.