1.
Express 0.0000421 in scientific notation.
A.
4.21 × 10
-6
B.
4.21 × 10
-5
C.
4.21 × 10
-9
D.
4.21 × 10
-4
Hint
2.
Determine the slope of the line graphed below.
A.
B.
C.
D.
0
Hint
3.
Which equation is the slope-intercept form of the equation of the line that passes through (1, 2) and is parallel to 4
x
- 2
y
= 6?
A.
y
= 4
x
+ 3
B.
C.
y
= 2
x
D.
y
= -2
x
+ 1
Hint
4.
Which graph represents the solution to
x
+ 4 > -2?
A.
B.
C.
D.
Hint
5.
Select the letter that has one line of symmetry.
A.
J
B.
A
C.
G
D.
F
Hint
6.
What is the slope of the line through the points
A
(-3, 4) and
B
(2, -1)?
A.
B.
1
C.
-3
D.
-1
Hint
7.
Find (4
r
+ 7
s
)(4
r
- 7
s
)
A.
16
r
2
+ 56
rs
+ 49
s
2
B.
16
r
2
- 56
rs
+ 49
s
2
C.
16
r
2
+ 49
s
2
D.
16
r
2
- 49
s
2
Hint
8.
The greatest power in a quadratic function is ______.
A.
2
B.
1
C.
3
D.
4
Hint
9.
Factor
x
2
+ 5
x
+ 6.
A.
(
x
+ 2)(
x
+ 3)
B.
(
x
+ 1)(
x
+ 6)
C.
(
x
+ 1)(
x
+ 5)
D.
prime
Hint
10.
Find
.
A.
B.
2
C.
D.
Hint
11.
Find
.
A.
B.
C.
D.
Hint
12.
Solve
.
A.
-2 or
B.
-2 or 7
C.
-2
D.
5
Hint
13.
Simplify the expression 2
a
+ 7
b
+ 12
a
+ 3
b
and then evaluate if
a
= 2 and
b
= -2.
A.
10
a
+ 14
b
; -8
B.
14
a
+ 10
b
; 8
C.
14
a
+ 8
b
; 12
D.
9
a
+ 15
b
; -12
Hint
14.
Find the graph that is nonlinear.
A.
B.
C.
D.
Hint
15.
Which equation represents exponential growth?
A.
y
= 250 ·
x
B.
y
= 250 × 0.25
x
C.
y
= 250 × 0.4
c
D.
y
= 250 × 4
x
Hint
16.
A ball is launched straight up from ground level modeling the equation
h
= 52
t
– 10
t
2, where
h
stands for height in meters and
t
stands for time. What is the approximate value of
t
when the ball hits the ground?
A.
0 seconds
B.
6.0 seconds
C.
5.2 seconds
D.
2.6 seconds
Hint
17.
Use substitution or elimination to solve the system of equations.
x
+ 2
y
= 6
x
– 3
y
= –4
A.
(2, 2)
B.
(–2, 2)
C.
(2, –2)
D.
(–2, –2)
Hint
18.
What is the scale factor of Figure A to Figure B?
A.
2
B.
3
C.
D.
Hint
19.
Find the quotient. Simplify
A.
B.
C.
D.
Hint
20.
Solve the equation.
A.
x
= –2
B.
x
= –3
C.
x
= 2
D.
x
= 3
Hint