Simplifying expressions and multiplying polynomials

Simplify    5(2 - 7n)

•  52 - 57n
• 10 - 7n
• 10 - 35n
• 10 + 35n

Simplify the expression:
6 + 2(7x - 3) 

• 12 + 7x
• 14x
• 14x + 3
• 9 + 7x

4a + 9 + a

• 5a + 9
• 14a
• 3a + 9
• 5a - 9

Simplify the Expression. 
9z  - 21 - 3z + 10

• Simplified
• 9z - 21 - 7
• 9z - 11 -3z
• 6z - 11

True or False:
u³and u² are like terms.

• True 
• False

7y + 8 - 2y x 2 =

• 5y + 16

• 3y + 8

• 11y + 8

• 3y - 8

(x+2)(x+3)

• 5x

(x-4)(x+1)

(y+5)(y+2)

(2x-1)(x+5)