Question

Which expressions are equivalent to 9b?

Choose all answers that apply
A. b+2(b+2b)
B. 3b+b
C. 2(2b)​

Answer 1

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Explanation:

A

• b + 2(b + 2b)
• b + 2(b) + 2(2b)
• b + 2b + 4b
• 7b

B

• 3b + b
• 4b

C

• 2(2b)
• 4b

Answer 2

A. b+2(b+2b)

b + 2b + 4b = 7b

B. 3b + b = 4b

C. 2(2b) = 4b

None of them are equal to 9b