Combining Like Terms / Dist Prop

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

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

Which of these are like terms in the following expression:
3x + 7 - 9x + 24y + 2x²

• 7, 24y
• 3x, 9x
• 3x, -9x
• 3x, -9x, 2x²

Which expression is equivalent to
v + v + v + v + v?

• 5v
• v⁵
• v + 5
• v5

Which expression is equivalent to:
d + d + d + 3 + 2

• 3d + 5
• d + 5
• 2d + 7
• 3d + 4

Simplify: 10d - 3d + 2e + 4d

• 11d + 2e

• 17d + 2e

• 19de

• Can't be simplified

Simplify: 8q + 3q - 6t + 2q - 4q

• 3qt

• 11q - 6t - 2q

• 9q -6t

• Can't be simplified

Simplify: 10w + 3d + 3w + d

• 13w + 4d

• 17wd

• 13w + 3d

• Can't be simplified