I think the answer might be c
Answer:
I think it's A
hope this helps
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Step-by-step explanation:
Answer:4x+12
Step-by-step explanation:
4 times x is 4x and 4 times 3 is 12
Answer:
(B)21+3a
Step-by-step explanation:
An expression is said to be distributive when:

Given the algebraic expression: (7 + a)3
Applying the distributive property

An equivalent expression is 21+3a.
The correct option is B