1. x2 + 9x + 20 2. x2 + 7x + 12

3. x2 + 8x + 15

4. x2 + 7x + 12

5. x2 + 11x + 10

6. x2 + 7x + 6

7. x2 + 5x + 4

8. x2 + 10x + 21

9. x2 + 10x + 16

10. x2 + 10x + 9

11. x2 + 12x + 20

12. x2 + 15x + 14

13. x2 + 13x + 42

14. x2 + 9x + 18

15. x2 + 16x + 60

Name the most appropriate metric unit for each measurement like a length of an carrot

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8