The document provides assignments and lesson materials for math lesson 2-8. It includes: 1) Three assignments due on October 22nd and 25th including practice problems, a checkpoint, and chapter test. 2) A warmup with 5 problems evaluating absolute value expressions and solving equations. 3) An overview of solving literal equations by isolating the variable being solved for, and using dimensional analysis to convert measures using unit multipliers. 4) Four example problems solving literal equations and formulas for a specified variable, and converting between US and Australian dollars using an exchange rate.

1. Lesson 2­8.notebook October 18, 2012
Assignment:
1­­>L2.8, pg. 128­129, #1­21 (odds) ­ Due Monday (10/22)
2­­>Checkpoint 2­5 thru 2­8 ­ Due Monday (10/22)
3­­>Chapter 2 Test ­ Thursday (10/25)
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2. Lesson 2­8.notebook October 18, 2012
Lesson 2.8 WarmUp:
1) Evaluate |f + g| ­ h, when f = 4, g = ­5, and h = 6
Solve­­then graph the solution set.
2) |2x ­ 4| = 8
3) |5y + 2| = ­7
Solve. If necessary, round to the nearest hundredth.
4) 2n ­ 4 3n + 3
5 10
5) Find the percent of change­­round to the nearest whole percent.
original: 11
new: 25
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3. Lesson 2­8.notebook October 18, 2012
Lesson 2.8:
*literal equation ­ a formula or equation that involves several "different"
variables
*To solve a literal equation ­ use the same process as solving an equation
with one variable. [Isolate the variable that you are solving for]
*dimensional analysis/unit analysis = unit multiplier
*Used to convert measures
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4. Lesson 2­8.notebook October 18, 2012
Lesson 2.8 examples:
Solve each equation or formula for the variable indicated.
A) 4m ­ 3n = 8, for m
B) a(q ­ 8) = 23, for q
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5. Lesson 2­8.notebook October 18, 2012
C) ­14n + q = rt ­ 4n, for n
D) Mrs. Durst found a rare game online priced at 35 Australian dollars.
If the exchange rate is $1 US = $1.24 Australian, find the cost of the game
in US dollars. Round to the nearest cent.
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