Equivalent Expressions

Which expression is equivalent to 7x + 4

• 9x - 3x - 4
• 6x + 2x + 4
• 3x + 4 + 4x
• 11x

Which expression is equivalent to -5x - 10

• -5x +10 
• -3x - 2x - 5 - 5
• -10 +3x - 2x
• -15x

Which expression is equivalent to 2x + 4

• 10x - 8x + 2 + 2
• 10x + 8x - (-4)
• 14x - (-12x) + 4
• 6x

Solve 3x + 5y   if x = -3 and y = 4

• 23
• -11
• 11
• 24

If each side of a square is x+2, which expression would show the perimeter of the square? 

• 4(x+2) 
• x + 4
• X + 8
• 1