Final answer:
The equivalent expression to (4x+11)+7x is (4x+7x)+11, which simplifies to 11x+11, making option B the correct answer.
Step-by-step explanation:
Combining like terms in the expression (4x + 11) + 7x involves adding the coefficients of the variable x. The terms 4x and 7x are combined to yield 11x, and the constant term 11 is retained. This simplification results in the equivalent expression (4x + 7x) + 11, which further reduces to 11x + 11. The correct choice from the given options is B. (4x + 7x) + 11. This process illustrates a fundamental algebraic concept, showcasing how terms with the same variable are combined to express the simplified form of the original expression.