algebra

Simplify the expression: 3x + 2x

• 5x
• x
• 6x
• 5

Simplify the expression: 7v + 2 + 12 + 2v

• 23
• 23v
• 9 + 14v
• 9v + 14

3b + b - 2b 

• 3b
• b
• 2b

Simplify: 4x² - 3x + 11 -2x

• 4x² - 5x + 11
• 11x + 11
• 16x² - 5x + 11
• 10x²

If a = 4 and b = 6, what is the value of 3a + 5b?

• 40
• 42
• 44
• 46

If y = 7, find the value of 2(y+4).

• 11
• 22
• 20
• 12

Which of the following is the correct expansion of:
5(r - 2)?

• 5r - 2
• 5r +2
• 5r + 10
• 5r - 10

Evaluate -2x if x = 10

• -8

• 20

• -20

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20
• 24
• 44
• 4

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7