2. Notes Over 2.5 Rules for Multiplying Negative Numbers. If there is an even number of negative numbers, then the answer is Positive. If there is an odd number of negative numbers, then the answer is Negative.

3. Notes Over 2.5 Simplify the variable expression.

4. Notes Over 2.5 Evaluate the expression.

5. Notes Over 2.5 Evaluate the expression.

6. Notes Over 2.5 Using Multiplication in Real Life. 17. To promote its grand opening, a record store advertises compact discs for $10. The store loses $1.50 on each compact disc it sells. How much money will it lose on its grand opening sale if it sells 256 discs? Verbal Model Number of discs sold Loss per disc Total loss The store loses $384 on its grand opening.

7. Notes Over 2.5 Using Multiplication in Real Life. 18. To promote its grand opening, a record store advertises compact discs for $10. The store loses $1.50 on each compact disc it sells. How much money will it lose on its grand opening sale if it sells 256 discs? Verbal Model Number of discs sold Loss per disc Total loss The store loses $462.50 on its grand opening. 18. To promote its grand opening, a record store advertises compact discs for $10. The store loses $2.50 on each compact disc it sells. How much money will it lose on its grand opening sale if it sells 185 discs?

8. Notes Over 2.5