Algebra Pinkston

Example of proportion: A package of 15 tablets sells for $1.17. At the same rate, how much would a bottle of 100 tablets cost? = tablets cost

SAT Question If x pencils cost y cents, how many dollars would z pencils cost at the same rate? Notice the cents and then the dollars. Since one dollar is 100 cents, a dollars is 100a cents. Let “a” be the “variable”.

An exponent acts on what is directly in front of it. If a parenthesis is in front of it, it acts on everything in the parenthesis. Examples:

thousandshundredstensones 2345 Pattern that shows that Place value pattern: the number 2345

thousandshundredstensonestenthshundredths Negative exponents For any nonzero real number b and integer n,. Pattern showing negative exponents: a.Place value pattern: the number

Examples: How to do this on the calculator: - 2 ^ 5 or -2 y x 5. How to do this on the calculator: (- 4) ^ 3. Or

Examples:

A baseball team has won 10 games and lost 5 games. If the team wins the next k games, it will have won 80 percent of all the games it played. What is the value of k? A.2 B.3 C.6 D.8 E.10 SAT Question Percent of games won = Number of games won Total number of games

Get ready for a “Small Quiz” to be written on your grade sheet.

Solve: 1. The price of a computer was cut in half. Then it was decreased another $34. The new price was $338. What was the original price? Quiz. Copy the problem and show work to get answer. Put your grade paper on the front of your row, quiz side down.

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