Choice A is the correct answer. Distribute and solve.

1. Distribute: $5x + 10 \leq 7x + 4$
2. Subtract 5x: $10 \leq 2x + 4$
3. Subtract 4: $6 \leq 2x$
4. Divide by 2: $3 \leq x$, which is equivalent to $x \geq 3$

?�� Strategic Tip: Reading $3 \leq x$ backwards as $x \geq 3$ is a crucial skill.

Choice B is incorrect because it reverses the inequality direction ($x \leq 3$). Choice C is incorrect because it uses negative 3. Choice D is incorrect because it uses negative 3 and wrong direction.