Q Ch al l en g e 60. Reaso n i n g W hich is th e correct graph of - 3 < - x? Explain.
— —H 1 ----- 1 ----- 1 ----- 1 ----- 1 ----- 1 ---- 0 .....+■■■» 0
-4 -1 1 cdH h H h
2 -1^1
H 0 - 4- -*4- H h- 4 - 3 - 2 - 1 0 1 2 3 4 - 4 - 3 - 2 - 1 0
- Reasoning Give a counterexam ple for this statem ent: If x > y, th e n x 2 > y 2.
- Reasoning D escribe the n u m b ers x an d y such th a t if x > y, th e n x 2 = y2.
H H— 0 ---h
1 2 3 4Graph on a number line.- all values of p s u c h t h a t p> — 3 a n d p ^ 3 64. all values of q such th a t q < -2 or q > 5
ySAT/ACTSt a n d a r d i ze d Test Pr ep
- W hich inequality has th e sam e solutions as k > 6?
Short
: R e s p o n s eCD k< -6 CD fc<6 CD 6 < fc CD -k>-6
66. W h a t i s t h e v a l u e o f t h e e x p r e s s i o n
CD23
29412s * 4 — ( —3)2^
( 3)2 4*5
G 2 9 CD^23 1 1 CD§- Last season, Betsy scored 36 points. This is 8 less th a n twice th e n u m b e r of points
that Amy scored. How many points did Amy score?
CD 22 CD 36 CD 44 CD 72
68. At an airport, a runw ay 1263 ft long is being repaired. The project forem an reports
th at less th a n one third of th e job is com plete. Draw a diagram of the runw ay th at
shows how m u ch of it has b e e n repaired. W hat is an inequality th at rep resen ts the
n u m b e r of f e e t /th a t still n e e d to be repaired?Mixed Review
Tell whether each percent change is an increase or decrease. Then find the
percent change. Round to the nearest percent.Se e Lesso n 2- 10.- original am ount: $10
new amount: $12
Find each product or quotient.- original am ount: 20 in.
new am ount: 18 in. - —4 ( — 1 1 ) 73. H) 74. -3.9 9- 1.3
- original am ount: 36°
new amount: 12 °
Get Read y! To p r e p a r e f o r Le sso n 3 - 2 , d o Ex e r c i se s 7 6 - 7 9.
Solve each equation.- y—5 = 6 77. p — 4 = — 6 78. v+5 = — 6
Se e Lesso n 1-6.75- M - | )See Lesso n 2- 1.79.* +! -!170 Ch ap t er 3 So lving In eq u alit ies