Like Terms and Distributive Property

Which of these is the correct use of the distributive property for the following expression?
5(2x - 8)

• 10x - 8
• 10x + 40
• 7x - 3
• 10x - 40

Simplify the expression:

12(3 + m)− 5m

• 36 + m

• 15 + 6m

• 36 + 12m - m

• 36 + 7m

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

• 23
• 23v
• 9 + 14v
• 9v + 14

Simplify    
5(2 - 7n)

• 52 - 7n
• 10 - 7n
• 10 - 35n
• 10 + 35n

Combine Like Terms. 
8c  +  3  + 2c 

• 3 + 10c 
• 13c
• 11c + 2
• 5c + 8

Combine Like Terms. 
10u - 5u + 4

• 9u
• 5u + 4
• 50u + 4
• 19u

What is/are the coefficient(s) of
 2x + 9 + 7x?

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

What is/are the constant(s) of 2x + 9 + 7x?

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

Is 5(2n + 4) = 10n + 20?

• Yes
• No

x+x+x+x+x

• x + 5 
• 5x
• x+x+x+x+x+5
• x to the 5th power