DIAMLER L VADLAMURI
WebWorK Set 01
Problem Set 01 covers lecture topics from chapter 1 in the book.
1.
(1 pt) ¡b¿Note:¡/b¿ You only have TWO (2) tries for this
question.
This exercise focuses on operations with inequality and in-
terval notations.
Match the sets and the inequalities by placing the letter of the
inequality next to each set listed below:
1. All
x
in the interval
[
-
16
,
13
)
2.
x
is greater than
-
16
3.
x
is no more than 13
4.
x
is nonnegative
5. All
x
in the interval
[
-
16
,
13
]
A.
-
16
≤
x
≤
13
B.
x
≤
13
C.
x
≥
0
D.
-
16
≤
x
<
13
E.
-
16
<
x
2.
(1 pt) This exercise concerns the definition of absolute
values.
Evaluate the following expressions:
|-
9
|
=
-
9
-|-
3
|
=
If 9
<
x
, then simplify:
|
9
-
x
|
=
If
y
<
-
3, then
|
y
+
3
|
y
+
3
=
3.
(1 pt)
Evaluate:
1
8
(
-
2
-
2
/
3
2
)
=
¡b¿NOTE:¡/b¿ Your answer must be a number. It cannot be
an algebraic expression.
4.
(1 pt)
Evaluate:
3
(
-
10
)(
5
-
11
-
2
(
8
))
=
¡b¿Note:¡/b¿ Your answer must be a number. It cannot be an
algebraic expression.
5.
(1 pt) Using properties of real numbers, the expression
(
9
a
)(
7
b
+
4
c
-
10
d
)
can be written in the equivalent form
K
·
ab
+
M
·
ac
+
N
·
ad
.
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- Spring '10
- D'ARVILLE
- Biology, Algebra, 1 pt, Department of Mathematics, University of Rochester
-
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