1. | 3x + 1 + 8x + 9 |
A. |
B. |
C. |
D. |
2. | 2x + 5y - 7x + 8y |
A. |
B. |
C. |
D. |
3. | 4(x + 8) - 9 |
A. |
B. |
C. |
D. |
4. | -3(x + y) + 5(x - y) |
A. |
B. |
C. |
D. |
5. | A + b = b + a is an example of the property called ______________________________________________________________________ |
6. | What number is known as the multiplicative identity? ____________________ |
7. | Ab(c) = (ab)c is an example of what property? __________________________________ |