Mid-Chapter Quiz MathXL for School^
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Write an algebraic expression for each phrase.- a n u m b e r n d iv id e d b y 4
- 2 less than the product of 5 and n
- T h e ta b le s h o w s h o w th e t o t a l c o s t o f a f ie ld t r i p
d e p e n d s o n t h e n u m b e r o f s tu d e n ts. W h a t is a r u le
f o r th e t o t a l c o s t o f th e tic k e ts? G iv e th e r u le i n w o r d s
and as an algebraic expression.
Field Trip
| N u m b e r o f S t u d e n t s
20 (12-20) + 150
40 (12-40)+ 150(^60) (12 • 60) + 150
- T h e s ig n s h o w s t h e c o s ts a s s o c ia te d w i t h a w h it e w a t e r
r a f t in g t r ip. W r it e a n e x p r e s s io n t o d e t e r m in e th e
c o s t o f 3 c h ild r e n a n d 1 a d u lt r e n t in g e q u ip m e n t f o r a
w h it e w a t e r r a f t in g t r i p t h a t la s ts h h o u rs.
Whitewater Tours
Adult Ticket $53
Ch i l d T i c k e t $32
Eq u i p m e n t Re n t a l $5 per hourSimplify each expression.- 24 + (3 + 22)
- Vl44
Evaluate each expression for the given values of the
variables.
- 3x • 2 + y; x = 3 a n d y = 6
- (4a)3 -h (b - 2); a = 2 and b = 4
9. Name the subset(s) of real numbers to which each
n u m b e r b e lo n g s. T h e n o r d e r t h e n u m b e r s f r o m le a s t
to greatest.
VT05, -4 , |
1 0. E s tim a te V l 4 t o th e n e a r e s t in te g e r.
1 1. W h a t p r o p e r t y is s h o w n i n th e f o l l o w i n g e q u a tio n?
(5 + 8 ) + 11 = 5 + (8 + 1 1 )
1 2. U s e t h e ta b le b e lo w. I f th e t o t a l c o s t f o r n s a n d w ic h e s
is $ 1 6 .5 0 , w h a t is th e t o t a l c o s t w h e n 1 m o r e s a n d w ic h
is b o u g h t?
Lunch M enuSa l a d $6.25
Sa n d w i c h $5.50
Dr i nk $2.75Do yo u UN DERSTAND?
1 3. W h a t w o r d p h ra s e s r e p r e s e n t t h e e x p re s s io n s
-2 + 3x a n d 3x + ( —2)? A re the tw o expressions
equivalent? Explain.- Use grouping sym bols to m ake the follow ing
equation true.
42 + 2 • 3 = 5 4 - Choose the correct w ord to com plete the follow ing
s e n te n c e : A n a t u r a l n u m b e r is (always, sometimes,
never) a w h o le n u m b e r.
1 6. H o w m a n y n a t u r a l n u m b e r s a re i n th e s e t o f
num bers from —10 to 10 inclusive? Explain.
1 7. W h a t is th e s i m p li f i e d f o r m o f ^ r , w h e n abc =£ 0?
Explain using the properties of real numbers. - Reasoning Are the associative properties true for all
integers? E x p la in. - Use the C om m utative Property o f M u ltip lica tio n to
r e w r it e t h e e x p re s s io n (x • y) • z i n t w o d if f e r e n t w a ys.
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