Algebra-1

The correct answer is C. 3(4 + 5).

An equation is a mathematical statement that shows equality between two expressions. Let's analyze each option:

A. 2 + 2 = fish: This is not a valid equation because "fish" is not a mathematical expression or value. It does not make sense in the context of mathematical equality.

B. 2x + 4 = 25: This is a valid equation because it asserts equality between the expressions "2x + 4" and "25." It involves a variable (x) and can be solved to find...