Answer:
8) a.
9) c.
10) b.
11) b.
12) c.
Step-by-step explanation:
8.) 2x^2 + (4x-6x^2) + 9 - (6x+3)
Simplify: 4x^2 - 2x + 6
9.) -4x + 10 > 5x + 55
Subtract 10: -4x > 5x +45
Subtract 5x: -9x > 45
Divide by -9: x < -5
10.) 5(3 - x) < -2x + 6
Simplify: 15 - 5x < -2x + 6
Subtract 15: -5x < -2x - 9
Add 2x: -3x < -9
Divide by -3: x > 3
11.) -28x^2 + 35x
Divide by -7x: 4x - 5
Answer: -7x(4x - 5)
12.) 9q^2 - [tex]\frac{2}{3}[/tex](3q - 7) + 5q^2
Simplify: 14q^2 - 2q + [tex]\frac{14}{3}[/tex]
