Which expressions are equivalent when m is equal to 1 and m is equal to 4 ?

For choice A, simplify the second expression: m + 4 + 2m = 3m + 4, so it matches the first expression for every value of m. In particular, both equal 7 when m = 1 and 16 when m = 4. The other choices do not give matching values at both inputs.

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