| |
| |
1. |
Express 0.0000421 in scientific notation. |
| |
|
A. |
4.21 × 10-4 |
B. |
4.21 × 10-6 |
| |
|
C. |
4.21 × 10-9 |
D. |
4.21 × 10-5 |
| |
|
Hint |
|
| |
2. |
Solve  . |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
3. |
Use substitution to solve the system of equations given below.
y = 2x
5x - y = -24 |
| |
|
A. |
(-4, -8) |
B. |
no solution |
| |
|
C. |
infinitely many solutions |
D. |
(-8, -16) |
| |
|
Hint |
|
| |
4. |
Select the figure that has two lines of symmetry. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
5. |
Find a number that when squared equals 484. |
| |
|
A. |
-22 only |
B. |
None of these is correct |
| |
|
C. |
22 only |
D. |
22 or -22 |
| |
|
Hint |
|
| |
6. |
A rotation of 180° counterclockwise or 180° clockwise would be ______. |
| |
|
A. |
impossible |
B. |
different |
| |
|
C. |
the same |
D. |
None of these is correct. |
| |
|
Hint |
|
| |
7. |
Simplify the expression 2a + 7b + 12a + 3b and then evaluate if a = 2 and b = -2. |
| |
|
A. |
10a + 14b; -8 |
B. |
14a + 10b; 8 |
| |
|
C. |
9a + 15b; -12 |
D. |
14a + 8b; 12 |
| |
|
Hint |
|
| |
8. |
Find the equation that has direct variation. |
| |
|
A. |
y = –3x – 1 |
B. |
y = 5x + 1.3 |
| |
|
C. |
y = 0.8x + 9 |
D. |
y = 4x |
| |
|
Hint |
|
| |
9. |
Which three points are collinear? |
| |
|
A. |
(1, 2), (–3, –2), (–2, –4) |
| |
|
B. |
(3, –1), (2, 5), (2, –3) |
| |
|
C. |
(–5, 2), (1, 1), (4, 4) |
| |
|
D. |
(–4, 4), (0, –4), (–1, –2) |
| |
|
Hint |
|
| |
10. |
Which way does the graph of y = –2x2 open? |
| |
|
A. |
right |
B. |
left |
| |
|
C. |
down |
D. |
up |
| |
|
Hint |
|
| |
11. |
How many diagonals does a 25-sided polygon have? |
| |
|
A. |
300 |
B. |
550 |
| |
|
C. |
25 |
D. |
275 |
| |
|
Hint |
|
| |
12. |
Which equation represents exponential growth? |
| |
|
A. |
y = 250 ·  x |
B. |
y = 250 × 0.4c |
| |
|
C. |
y = 250 × 4x |
D. |
y = 250 × 0.25x |
| |
|
Hint |
|
| |
13. |
Find a solution to the equation by doing the same thing to both sides.
8p + 14 = 2p – 22 |
| |
|
A. |
p = –1 |
B. |
p = 1 |
| |
|
C. |
p = 6 |
D. |
p = –6 |
| |
|
Hint |
|
| |
14. |
Julian said, ''I'm thinking of a number. When I add 3 to my number, multiply the sum by 12, divide the product by 8, and subtract the result by 7, I get 11. What is the number I'm thinking of?'' |
| |
|
A. |
9 |
B. |
7 |
| |
|
C. |
8 |
D. |
10 |
| |
|
Hint |
|
| |
15. |
A ball is launched straight up from ground level modeling the equation h = 52t – 10t2, 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. |
5.2 seconds |
| |
|
C. |
2.6 seconds |
D. |
6.0 seconds |
| |
|
Hint |
|
| |
16. |
Use you calculator's Table feature to approximate the solutions to the nearest hundredth.
4x(x + 2) = 12 |
| |
|
A. |
x = –1, x = –4 |
B. |
x = 1, x = –3 |
| |
|
C. |
x = 2, x = –2 |
D. |
x = 0, x = –4 |
| |
|
Hint |
|
| |
17. |
Use a graph to solve the system of equations.
y = x2
y = –x + 2 |
| |
|
A. |
(–2, 1), (1, 4) |
B. |
(–2, 4), (1, 1) |
| |
|
C. |
(1, 1), (4, –2) |
D. |
(4, 1), (1, –2) |
| |
|
Hint |
|
| |
18. |
Find the correct representation of a glide reflection. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
19. |
Scale the figure below by . |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
20. |
What is the scale factor of Figure A to Figure B? |
| |
|
 |
| |
|
A. |
 |
B. |
4 |
| |
|
C. |
 |
D. |
2 |
| |
|
Hint |
|
|
|