SAT Question 5ba187d4: Equivalent Expressions answer and explanation with Desmos solution

Choice A is incorrect. This expression is equivalent to $2,600x^2$, not $100x^2+2,600$.

Choice C is incorrect. This expression is equivalent to $260,000x^2$, not $100x^2+2,600$.

Choice D is incorrect. This expression is equivalent to $260,000x^2+2,600$, not $100x^2+2,600$.