2. Algebra 2 1.7 Pinkston

3. 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

4. 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”.

5. 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:

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

7. thousandshundredstensonestenthshundredths 234567 Negative exponents For any nonzero real number b and integer n,. Pattern showing negative exponents: a.Place value pattern: the number 2345.67

8. 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

9. Examples:

11. 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

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

13. 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.

14. THE END