INSTRUCTOR’S TESTING MANUAL COLLEGE ALGEBRA AND TRIGONOMETRY SEVENTH EDITION
Margaret L. Lial American River College
John Hornsby University of New Orleans
David I. Schneider University of Maryland
Callie J. Daniels St. Charles Community College
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ISBN-13: 978-0-13-592440-2 ISBN-10: 0-13-592440-5
CHAPTER TEST FORMS
1 CHAPTER R, FORM A COLLEGE ALGEBRA AND TRIGONOMETRY ì ü 54 16 1. Let A = ïí-9.6, , 6π , 0, 13, 2.15, , 49 ïý . ïîï ïþï 7 5 List the elements of A that belong to the given set. a.
NAME DATE
Natural numbers
1.
a. ____________
b. Rational numbers
b. ____________
c.
c. ____________
Irrational numbers
2. Evaluate the expression if x = -2 , y = -4 , and z = 1 :
2.
______________
3.
a. ____________
2
2y - x
2
( y - 3z )
3. Identify the property illustrated. Let a, b, and c represent any real numbers. a.
(a + b) c = ac + bc
b.
a + éëb + (-b)ùû = a + 0
b. ____________
c.
æ 1 2 ö÷ 3 1 æ 2 3 ö÷ çç ⋅ ÷⋅ = ⋅çç ⋅ ÷ èç 2 3 ÷ø 4 2 èç 3 4 ÷ø
c. ____________
d.
1 1 ( p + 3) = ( p + 3) ⋅ 2 2
d. ____________
Perform the indicated operations. 4. éë(3a + b) - 2ùû
2
4.
______________
5.
(3x 2 - 2 x - 5)-(2 x3 + x - 7) + 2 x 2 ( x - 3)
5.
______________
6.
( x 2 - x + 2)(2 x - 3)
6.
______________
7. éë( x - y ) - 7ùû éë( x - y ) + 7ùû
7.
______________
8.
______________
3
8. (2 x + 5) 9.
3 y 4 - 5 y 3 -14 y 2 + 10 y y2 - 2
9.
______________
10.
x 2 - 9 x -1 ⋅ x 2 - x x 2 - 3x
10.
______________
11.
3x x 3x +1 x - 4 x + 4 16 - x 2
11.
______________
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