Multi Polynomials

What is the correct name of the following:
3x + 5y² - 3

• monomial
• binomial
• trinomial
• polynomial

Which is an example of a cubic monomial?

• A
  x³ + 5
• B
  x² + 3
• C
  x² + 5x - 6
• D
  5x³

6v(2v + 3) 

• 12v+18
• 15v² + 8v
• 12v² + 18v
• 12v² + 18v²

Multiply
x²(2x+3)

• x²+2x+3
• 2x+3
• 2x²+3x
• 2x³+3x²

 2x³(x²−2x − 3)

• 2x⁶- 4x³ - 6x³
• 2x⁵−4x⁴ − 6x³
• -2x⁵−4x⁴ − 6x³
• -2x⁶−4x³ − 6x³

(2n + 2)(6n + 1)

• 12n + 2
• 12n² + 2
• 12n² + 12n + 2
• 12n² + 14n + 2

(x − 3)(6x − 2)

• 6x² − 20x + 6
• 6x² + 20x - 6
• 6x² +6
• 6x + 6

(4a + 2)(6a² − a + 2)

• 24a³ + 16a² + 6a + 4
• 24a³ + 8a² + 10a + 4
• 24a³ + 8a² + 6a + 4
• 24a³ - 8a² - 6a + 4

(n² + 6n − 4)(2n − 4)

• 2n³ + 16n² − 32n + 16
• 2n³ + 8n² − 32n + 16
• 2n³ + 8n² − 12n + 16
• 2n³ + 8n² − 32n - 16

(5x+2)(x²-3x+6)

• 5x³ - 17x² +24x +12
• 5x³ + 17x² - 24x +12
• 5x³ - 13x² + 24x +12
• 5x³ +13x² - 24x - 12