1. Chapter 2 2.4: Equations with Variables on Both Sides

2. Examples  6x + 3 = 8x – 21  -6d = d + 4  2(c – 6) = 9c + 2

3. Word Problem  You are trying to decide if you should buy used skates or rent skates. How many hours do you need to skate for the cost to be the same? Skate Rentals In-line skates $3.50/hr & safety equipment Safety Equipment$1.50/hr

4. Word Problem  A hairdresser is ordering shampoo. Company A charges $4 / 8oz bottle and $10 for shipping and handling. Company B charges $3 / 8oz bottle and $25 for shipping and handling. How many bottles must the hairdresser buy to justify using Company B?

5. Definitions  An equation has no solution if no value make the equation true and is an identity if there are an infinite number of solutions.  10 – 8a = 2(5 – 4a)  6m – 5 = 7m + 7 – m

6. Assignment  p. 98 – 99  2-26 evens