Mat 190 Test 3 Worksheet With Answers - 2008
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1
2Test 3
MAT 190
Winter 2008
Name ________________________
Simplify all answers and show your work!
1. Solve the inequality:
5
1 (
)
( 3
) 3
2. Solve the inequality:
2
5
2
7
−
−
>
−
−
≤
−
<
x
x
x
x > –2
–1 < x ≤ 3.5
3. At a pizza restaurant, a family can purchase four pizzas and three 2-Liter sodas for $30 or three pizzas
and two 2-Liter sodas for $22. What is the cost of a single pizza?
$6.00
2
5
9
3 +
2
+
=
x
y
x
-1
4. If f(x) =
, find the inverse (f
(x)).
5. Solve the system
7
3
4
3
+
=
x
y
7 −
x
2
-1
f
(x) =
(-3, 3)
3
Simplify the following.
4
−
2
2
3
2
5
−
−
2x
18
x
y
2
3
3
x
y
−
−
6.
7.
3 (
)
8.
9.
x
y
4
3
5
5
5
−
−
y
24
x
y
x
y
5
6
y
x
1
3
6
9
12
20
3
10
x
27
y
16
x
y
x 4
y
3
3
8
– 9
5
10.
32
11. y
• y
• y
2
8
y
2
2
2
2
2
2
2
12. Combine like terms:
3
6
8
4
6
5x
y – 2xy
+
−
−
+
x
y
x
y
xy
x
y
xy
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