Page 183 - Basic College Mathematics with Early Integers

Chapter 2 Review

(2.1) Evaluate each expression for x = 5, y = 0, and z = 2.

2x x + 7 y
1. 2. 4x - 3 3. 4.
z y 5x

7 + x 100 y
5. x - 2z 6. 7. (y + z) 2 8. +
3
3z x 3

Translate each phrase into a variable expression. Use x to represent “a number.”

9. Five subtracted from a number 10. Seven more than a number

11. Ten divided by a number 12. The product of 5 and a number

The map below shows selected cities and their normal record high and low temperatures. Use this map as indicated
throughout the rest of this Chapter Review to fill in each missing temperature in the picture.The table on the next page
may help to insert missing temperatures. Exercise 49 is the first exercise to use this map.

ARCTIC OCEAN
ARCTIC OCEAN
Barrow, AK
79 Reykjavik,
56 Iceland Stockholm, Sweden
76
97
London, Berlin, Germany
England 107
2
Los Angeles, CA Raleigh, NC Bucharest, Romania
105 Providence, RI 105
28 9 104
13
Houston, TX Geneva, Shanghai, China
107 Switz. Cairo, 104
7 Miami, FL Egypt 10 PACIFIC
98 101 118
30 34 Bombay, OCEAN
India
ATLANTIC 110
OCEAN 46
PACIFIC
OCEAN
INDIAN
OCEAN
Buenos Aires, Cape Town, Sydney,
Argentina South Africa Australia
104 105 114
22 32
0 1,500 3,000 Miles
0 1,500 3,000 Kilometers
Copyright 2012 Pearson Education, Inc.

Source: World Almanac; temperatures are for a 30-year period ending in 1990.

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