Lesson 8

Lesson 8 - Lesson 8 Equation (equality): - a statement that...

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Lesson 8 Equation (equality): - a statement that two expressions are equal #1 rule of algebra when solving equations: - whatever you do to one side of an equation, you must do to the other side #2 rule of algebra when solving equations: - if you don’t know the value of a quantity, use a variable to represent it Tips for solving application problems: - a set of guidelines for solving applied problems is available on page 62 of the textbook; you don’t have to follow these exact steps, but you should have some procedure for solving applications (define unknown values, set-up equations, solve) - pay attention to units, especially when working with distance, rate and time problems. - look for similarities in the set-up of different types of applications; many seemingly unrelated problems (interest problems, mixture problems, attendance problems) are set- up and solved in similar ways - if two parts make-up a total, then the total minus part 1 equals part 2 (think of rent) - be aware of the formula ± ² ³ ´ (distance equals rate times time; think of the speedometer in a car)
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- each of these examples is modeled after a homework problem, so pay attention and follow along Examples: a. To get into the 250 Club, a bowler must score an average of 250 for a three-game series. If a bowler has scores of 267 and 225 in her first two games, what is the minimum score in her third game that will get her into the 250 club? How do you calculate an average?
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Lesson 8 - Lesson 8 Equation (equality): - a statement that...

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