EE Review part 2-Equivalent Exp., Subst. Expression

Which expression is equivalent to 3x + 5 + 7x + 2?

• 10x + 7
• 17x
• 17
• 15x + 2

Which expression is equivalent to 4(x + 6)?

• 4x + 6
• 4x + 24
• x + 24
• 10x + 24

Which expression is equivalent to 12(5 - 4x)?

• 12x
• 17 - 16x
• 60 - 48x
• 60 - 4x

Which expression is equivalent to 3(2x + 1) + 4x + 2?

• 10x + 3

• 10x + 5

• 6x + 3

• 6x + 5

Which two expressions are equivalent to 5k?

• 3k + 2k

• k + 5

• 2k + 3

• 10k-5

• k+k+k+k+k

Which expression is equivalent to 10a + 6b?

• 16ab

• 2(5a + 3)

• 2(5a + 3b)

• 10 + a + 6 + b

Evaluate the expression:

(23 + m) ÷ 9

m = 4

Evaluate 8a - b     if a = 10   and   b = 6

• 74
• 38
• 1000
• 9000

Which value makes the equation true?

7x +3 = 31

• 3

• 4

• 5

• 6

Which value makes the equation true?

4(x-2) + 5 = 21

• 3

• 4

• 5

• 6