Algebra 1 Common Core Student Edition, Grade 8-9

Challenge S o lv e e a c h e q u a t io n. C h e c k y o u r s o lu t io n s.

77. 
    

    |x + 4|=3x 78. |4 t-5 | = 2 t + (^1) 79. ||2 y + 3| = 4 y
    D e t e r m i n e w h e t h e r e a c h s t a t e m e n t is always, sometimes, o r never t r u e f o r r e a l
    num bers a a n d b.

    
    


78. 
    

    \ab\ = \a\ • \b\ 81. 82. \a + b\ = \a\ + \b\

    
    

SAT/ACT

St a n d a r d i z e d Test Pr ep

83. T h e e x p e c te d m o n t h l y r a i n f a l l i n a c e r t a in t o w n is s h o w n f o r June,
    J u ly , a n d A u g u s t. T h e a c tu a l r a i n f a l l g e n e r a lly v a r ie s f r o m th e
    e x p e c te d a m o u n t b y u p t o 0 .0 1 5 in. W h a t is th e m a x im u m a m o u n t
    o f r a i n f a l l th e t o w n c a n e x p e c t t o r e c e iv e i n July?


84. W hat is the solution of the equation | — 3 = 7?


85. W hat is the solution of the equation 3w + 2 — 4w - 3?

GRID D E D RESPONSE

Expected M onthly

Rainfall (inches)

June July August

4.12 4.25 4.41

86. Jose is purchasing 4 dress shirts that cost $28 each and 2 pairs of pants that cost
    $ 3 8 e a c h. T h e it e m s a re a ll o n s a le f o r 3 5 % o ff. H o w m u c h m o n e y w i l l Jose save b y
    p u r c h a s in g t h e m o n s a le in s te a d o f a t f u l l p r ic e?


87. 7 5 % o f w h a t n u m b e r is 90?

Mixed Review

W r i t e a c o m p o u n d i n e q u a l i t y t o m o d e l e a c h s i t u a t i o n. Se e Le sso n 3- 6.

8 8. T h e h ig h e s t e le v a t io n i n N o r t h A m e r ic a is 2 0 ,3 2 0 f t a b o v e sea le v e l a t M o u n t

M c K in le y , A la s k a. T h e lo w e s t e le v a t io n i n N o r t h A m e r ic a is 2 8 2 f t b e lo w sea le v e l a t

Death Valley, California.

89. N o r m a l h u m a n b o d y te m p e r a t u r e T i s w i t h i n 0. 3 ° C o f 3 7. 2 ° C.

Sim plify each expression.

90. 2(x+5) 91. —3 ( y — 7 ) 92. 4(€ + 3) - 7

Get Read y! To p r e p a r e f o r Lesso n 3 - 8 , d o Ex e r ci se s 9 4 - 9 7.

W r i t e e a c h s e t i n s e t - b u i l d e r n o t a t i o n.

94. A = { 0 , 1 , 2, 3, 4, 5, 6, 7, 8, 9 } 95. B = {l, 3, 5, 7}

W r i t e e a c h s e t i n r o s t e r f o r m.

96. C = { n | n i s a n e v e n n u m b e r b e t w e e n — 15 a n d —5 }


97. D={fc|fcisa c o m p o s it e n u m b e r b e t w e e n 7 a n d 1 7 }

See Lesso n 1- 7.

93. ~{m - 4) + 8

4* See Lesson 3-5.

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