Math Practice Test With Answer Key - Woodland Community College Page 30

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+
+
2
x
2
2
x
(
x
) 2
(
x
) 2
x
2
x
1
9. a. 
,           b. 
,                    c. 
,            d. 
                         
+
+
+
+
+
+
2
(
x
3
)(
x
) 4
(
x
5
)(
x
) 3
(
x
3
)(
x
) 3
2 (
x
1
)(
x
4
x
) 4
6
x
2
e. 
 
+
x
(
x
) 1
 
+
+
x
(
x
1
)(
4
x
) 3
xy
xy
10. a.
,                                                    b.
,                      c.
,                                 d.
 
3 +
+
2 +
x
3
y
x
5
y
x
2
5
x
9
 
+
( 3
61
) 1
( 3
61
) 1
11. a. 3, 2  ,                             b.8,                                      c.
 
10
10
 
R −
5
UT
12. S=
 
T
 
yz
13. X=
 
+
y
z
 
14. 4.5 mph 
 
15. 1 
 
16. 3.6 
 
17. 12km/h 
 
1
1
±
6 −
18. a.
3
,             b. 1, 13,                      c. 9,11,                   d. ‐8,125,                        e. 
,
 
3
2
 
±
21 +
6
±
17 +
19. a.
6
,                b.
 
2
 
1
20. a.(‐5,‐
),         b.(0,2)
[3,∞),              c. (‐∞,6) 
([2,∞),                     d, [‐4,2] 
3
 
 
 
 
 
 
 
 
 
 
 

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