# Ec ```Pre-Exam 1
Write all work.
September 18
Name:
1. Plot each number on the number line.
A) —1.5
B)—3
ID) —2qr
Ec
-
4
-Q
—
-
-
0
2. Translate each phrase into an algebraic expression.
A) The distance between x and —8 is 4.
1
/.pf
f
-
2p
1,
B) A mechanic estimates the total costs for a car’s repair when parts
cost \$45 and the labor costs \$28.50 per hour, for t hours of labor.
45
4-
3. Simplify each algebraic expression.
A) 28
—
3(4x + 8)
-
B) —(a+2b)+5(b--4)
C\d12
nf
—c&amp;+
-
4. Evaluate the expression for the specified values of the variable.
i
2
1
A)xO
()2
3
B)x=
/
-
(24
Th
7
ca)
I
H
1c
&plusmn;
&gt;
N
I
I
Ji
WI
+
II
—
x
+
&gt;c
+
(NH
/
G2
rv’
6. Solve the absolute value equation.
I
ri
L7 &plusmn;)
O1I\i
[‘
C
:
__V
’
2
a
0
(
c
-
) ot
&divide;3H
3\J
a
(C
€j
J
&plusmn;
to
t
7. Solve each absolute value inequality
number line.
I&gt;1
(2)( -)
x &gt;
A) 2x
q
the solution on the real
(O&lt; H
4—1&plusmn;3
—
x I
—
B) x
—
3
98.6j &lt; 0.8
&gt;
oLw
(
x&gt;
C\
(h
cg
7L
8. Evaluate the expression
O.Olp + O,05m + O,tOcl + O.25q
to find the value of the given number of pennies p, nickels
and quarters q.
ri,
climes d,
12 pennies, 3 dimes, 5 quarters
)
oa
&divide; oos()
+
•
c,ac(s)
3c)
9. Comp e e the table. The third row contains the differences between
consecutive entries of the second row. Describe the pattern in the
second row.
456
8—3m
-1 9
Differences
3
—
```