1. Get those math monkeys off your back

2. The expression 96t – 16t 2 represents the height, in feet, of a ball t seconds after it is thrown into the air. What is the height of the ball 3 seconds after it is thrown into the air? 96t – 16t 2 96(3) – 16(3) 2 288 – 144=144ft 144

3. If the mean number of e-mails received Monday through Friday was 7, then how many e-mails did Andrea receive Friday? Total emails 5 days = 7 Total emails =7 * 5 Total emails = 35

4. If the mean number of e-mails received Monday through Friday was 7, then how many e-mails did Andrea receive Friday? Total emails = 35 emails (Mon-Thr) = 4 + 8 + 3 + 9 = (Mon-Thr) = 24 emails Fri = 35 - 24 emails Fri = 11 11

5. Jay works 22.5 hours each week and earns $9.48 per hour. How much does Jay earn each week? Jay earns 22.5(9.48) =$213.30 $25.60 is taken out for taxes. What percent is taken out for taxes? 25.60 p 213.3 100 = 2560 = 213.3p p =12% 2560 / 213.3 = p

6. Jay wants to buy a car that costs $3000. He plans to save all of his earnings that remain after taxes are taken out. What is the minimum number of hours that Jay must work in order to save $3000 to buy the car?

7. How many hours must Jay work to save $3000 to buy the car? Jay earns $9.48 per hour minus 12% for taxes Jay takes home $9.48 *(.88) per hour Jay takes home $8.34 per hour Jay must work 3000 / 8.34 hours Jay must work 360 hours

8. The table shows median weekly earnings for professionals for the years 2000-2008. YearEarnings 2000$770 2002$823 2004$883 2006$928 2008$974 Make a Scatter Plot comparing the year and median weekly earnings.

9. YearEarnings 2000$770 2002$823 2004$883 2006$928 2008$974 Make a Scatter Plot comparing the year and median weekly earnings. median weekly earnings 2000 2002 2004 2006 2008 1000 950 900 850 800 750

10. YearEarnings 2000$770 2002$823 2004$883 2006$928 2008$974 Paul predicts salary in 2012 will be $1,200. Is his prediction reasonable?. median weekly earnings 2000 2002 2004 2006 2008 2010 2012 1100 1050 1000 950 900 850 800 750 Estimate looks high, based on the graph.

11. YearEarnings 2000$770 2002$823 2004$883 2006$928 2008$974 2010 2012 Is predicted 2012 salary of $1200 reasonable?. Estimate may be high, based on the table. 928 - 883 = 45 974 - 928 = 46 974 + 45 = 1019 1019 + 45 = 1064 1019 1064

12. An antiques dealer had 5 pieces appraised. The least expensive was $75 The range of appraisals was $300 The Mode was $75 The median was $205 The Mean (average) was $210.

13. The least expensive was $75 The range of appraisals was $300 $75 Range = highest - lowest 300 = x - 75 The most expensive was $375 $375

14. $75$375 The Mode was $75$75 Mode occurs most often, so there must be 2 items with that price. The median was $205$205middle number

15. $75$375 The Mean (average) was $210 $75 $205x 75 + 75 + 205 + x + 375 5 = 210 730 + x =1050x = 320

16. ColorCountFraction Yellow31/4 Green21/6 Blue11/12 Other61/2 Total12

17. ColorCountFraction Yellow31/4 Green21/6 Blue11/12 Other61/2 Total12 If the game is played 500 times, how many times will each color come up? Yellow: { 1 y 4 500 = 4y = 500y= 125 125

18. ColorCountFraction Yellow31/4 Green21/6 Blue11/12 Other61/2 Total12 If the game is played 500 times, how many times will each color come up? Green: { 1 g 6 500 = 6g = 500g= 83 83 125

19. ColorCountFraction Yellow31/4 Green21/6 Blue11/12 Other61/2 Total12 If the game is played 500 times, how many times will each color come up? Blue: { 1 b 12 500 = 12b = 500b= 42 83 125 42 250 500

20. ColorCountValue Yellow31/4 Green21/6 Blue11/12 Other61/2 Total12 What is the expected value of the prizes? Yellow: 125(.80) = $100 83 125 42 250 500 $0.80 $1.30 $2.00 Green: 83(1.30) = $107.90 Blue: 42(2.00) = $ 84 = $ 291.90