Ch ap t er Test M athX L fo r School^
Go to PowerAlgebra.comDo y o u k n o w H OW?
- W rite an a lgebraic expression fo r th e phrase the
quotient ofn and 6. - W rite a word phrase for - 12t + 2.
- Evaluate the expression - (pq)2 -t- ( - 8 ) fo r p = 2
and q = 4. - Dance The table shows how the total cost o f dance
c la sse s a t a s t u d io d e p e n d s o n t h e n u m b e r o f cla s se s
y o u ta k e. W r it e a r u le i n w o r d s a n d as a n a lg e b r a ic
e x p r e s s io n t o m o d e l th e r e la t io n s h ip.
Dance Classes
1 (1 X 15) + 20
2 (2 X 15) + 20(^3) (3 X 15) + 20
Simplify each expression.
- -2 0 - (-5) • ( —22)
6 .H)3
7.
8.9.7 ab , „a # 0■ I — 2 511 0. Is e a c h s t a te m e n t t r u e o r fa ls e? I f fa ls e , g iv e a
counterexam ple.
a. For a ll real n um bers a a n d b, a • b is e q u iv a le n t to
b • a.
b. For all real numbers a a n d b, a{b • c) = ab • ac
1 1. Is th e o r d e r e d p a i r (2 , - 5 ) a s o lu t io n t o th e e q u a t io n
4 + 3 x = — 2 y? Show yo u r w ork.
1 2. O r d e r t h e n u m b e r s — j 7 7
le a s t t o g re a te s t.- 1 | , a n d - y§ f r o m
13. Soccer T h e re a re t t e a m s i n a s o c c e r le a g u e. E a c h te a m
h a s 11 p la y e rs. M a k e a ta b le , w r it e a n e q u a tio n , a n d
d r a w a g r a p h to d e s c rib e t h e t o t a l n u m b e r o f p la y e rs p
i n th e le a g u e. H o w m a n y p la y e rs a re o n 17 te a m s?
Simplify each expression.- 5x2 — x2
- 12 + (-§)
- -(-2 + 61)
- —3 [ b — ( —7 )]
1 8. N a m e th e s u b s e t( s ) o f th e r e a l n u m b e r s t o w h ic h
each num ber belongs.
a. -2 .3 2 4 b. V^6- Identify each property.
a. a{b + c) = ab + ac
b. [a + b) + c = a + (b c)
Do y o u UN DERSTAND?
- Is the set of positive integers the same as the set of
nonnegative integers? Explain. - Error Analysis Find and
c o r r e c t t h e e r r o r i n t h e w o r k
shown at the right. - Is the following statement
t r u e o r fa ls e? I f th e p r o d u c t
of three numbers is negative,
th e n a ll the n u m b e rs are
negative. If false, give a counterexam ple. - Reasoning You notice that 10°C = 50°F,
20°C = 68 °F, a n d 30°C = 86 °F. U se in d u c tiv e
reasoning to p re d ic t the value in degrees F ahrenheit
of 40°C. - Reasoning When is the absolute value of a
d if f e r e n c e e q u a l t o th e d if f e r e n c e o f th e a b s o lu te
values? Explain.
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Chapter 1 Ch a p t er Test __ 73 ____&
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