Understanding Expressions: Seven More Than Twice a Weight

Let's talk about one of those math expressions that might pop up during your studies for the Kaplan Nursing Entrance Exam. You know the type—phrases that sound straightforward but can trip you up if you don't break them down correctly. Today, we’re tackling the phrase, "seven more than twice the weight of a person." You might be staring at that and thinking, “What does that even look like in math terms?” Well, let me explain.

To get started, we first need to establish a variable for the weight of a person. We'll use "w" for weight. So, when we say "twice the weight," we’re talking about 2w. Great, right? Now, add the phrase "seven more than." This indicates we need to add 7 to our earlier expression. So, combining these elements leads us directly to the mathematical expression 2w + 7. It’s pretty neat once you piece it together.

You might be wondering about the alternative options presented, which are often what causes confusion. Let’s walk through these together—trust me, it all connects.

First off, if you look at option B, w + 7, you're really only accounting for the weight of one person and then adding seven—not quite what we need! Then there's option C, 2w - 7, which suggests doing the opposite of what we're aiming for by subtracting seven instead of adding it. That’s definitely a no-go. And don’t even get me started on option D, w/2 + 7. Here, you're slowly halving the weight and THEN adding seven, which totally misses the mark of doubling it first and then adding seven.

It’s moments like these that can feel overwhelming, especially when you’re doing your best to prepare for an important exam like the Kaplan Nursing Entrance Exam. But don’t let these tricky expressions hold you back! Take the time to dissect them like we did here, and you’ll find that your confidence grows in understanding.

Remember, the key takeaway is that 2w + 7 accurately captures the entire essence of the question. This expression confirms that you've considered both the doubling and the increase by seven—all in one neat package. It's like being given a recipe; you need all the ingredients in the right quantities to whip up that perfect dish, right?

So, as you're studying, keep an eye out for these kinds of phrases. They may come in different forms, but once you understand the structure, like we’ve laid out today, you’ll be equipped to handle them with ease. Plus, don’t forget to practice—you know the more you work with these kinds of problems, the more instinctive they’ll become. Happy studying!