Final answer:
Both expressions 6x - 2x + 4 and 4(x + 1) simplify to 4x + 4, demonstrating that they are equivalent, and therefore Jamie's assertion that they are not equivalent is incorrect.
Step-by-step explanation:
Jamie asserts that the expression 6x - 2x + 4 and 4(x + 1) are not equivalent because one involves subtraction and the other does not. However, when you simplify the first expression by combining like terms (6x and -2x), you receive 4x + 4, which is the result of distributing the 4 in the second expression, yielding the same 4x + 4. Both expressions are indeed equivalent, demonstrating the use of the distributive property where multiplication is applied to each term within the parentheses.