Single variable equations are some of the most common types of problems on the ACT math section. You must know how to set up, use, and manipulate these kinds of equations, as they are a foundational element of mathematics upon which more complicated expressions (multiple variable, quadratics, etc.) are based.

So make sure you are prepared to tackle the ins and outs of single variable equations (no matter how they are presented on the ACT), before you take on some of the more complicated elements of ACT math.

This guide will be your complete walk-through of single variable equations for the ACT--what they are, how you’ll see them on the test, and how to set up and solve them.

Note: The current version of the SAT no longer includes this type of question. For up-to-date SAT writing tips, check out our top guide here.

Identifying Sentence Errors (ISE) questions, which ask you to pick the error in a sentence out of four underlined sections, seem like they should be the easiest part of the SAT Writing section. After all, you only have to find the error, you don't have to fix it. The test writers, however, are extremely adept at camouflaging the mistake in each sentence—if you don't know what to look for, you can easily find yourself assuming there's no error in as many as half of the sentences.

As such, it's vital that you take a systematic approach to the Identifying Sentence Errors questions. If you count on spotting the error by simply glancing over the sentence or by looking for sections that "sound" weird, you'll miss a lot of questions.

In this post, I'm going to detail the most effective approach to these questions and the common errors you need to look for:

The ACT has a straightforward test format, but that doesn’t mean it’s an easy test. You’re going to need to know how it’s structured and what kinds of questions to expect on each section in order to do well. In this article, I’ve listed 20 essential ACT tips, broken down by section, that will help you conquer the most difficult aspects of the test.

Is the ACT of today the same test that was given years ago? According to students and test experts, the ACT has gradually been getting harder over the years, both in the level of its questions and its fast pace.

So what does the ACT have to say about these claims? Is the ACT hard now more than ever before? And what exactly do people think is getting more difficult on this already challenging test? 

Now that you’ve received your SAT scores, it’s time for the most important part of this process—actually sending scores to colleges! But how do you do it? What are your options? In this article, I’ll give you all the information you need on how the process works and what choices you'll have when sending scores.

What are the instructions that you’ll see on the SAT? And are they important? In this article I’ll take a closer look at the directions you’re given on the test and tell you what parts of them are most critical for earning high scores!

If you’re planning on taking the ACT, you’re probably wondering what you can expect in terms of scores. In this article, I’ll take you through the basics of how the test is scored, show you where your scores fall in relation to other students, and give you a few tips on how to plan your studying to meet your goals.

What exactly are the instructions on the ACT? Do they really matter?

We will go over the complete ACT directions, including the main directions and the specific directions for each section. We’ll show how they reveal tips for how to do well on the test. You may be surprised by how many hints there are in the ACT directions!

Furthermore, knowing these directions before test day can save you time and stress – so you can just focus on the questions! So read on to be as prepared as possible for the ACT.

You may have heard of Pell Grants, which can be really important in helping students fund their college educations. Although the Pell sounds enticing, figuring out how to actually get a Pell Grant may be overwhelming. How do you know if you're eligible? Where do you apply? How do you keep track of your application? 

As it turns out, getting a Pell Grant isn't too difficult if you know where to begin. Follow the steps in this guide to optimize your chances of receiving Pell Grant money. 

If you're looking into applying for a federal Pell Grant, you may also be concerned about budgeting out your college expenses. What should you expect, exactly, from a Pell Grant? How helpful could it be?

Here, we'll outline the steps to figuring out what the Pell Grant can do for you. Read on for more information on Pell award amounts, and instructions on how to figure out what your grant will look like.

If you're looking for a quick and simple way to estimate your Pell Grant eligibility, you've come to the right place. I've included a couple of different charts that you may find helpful: one to check off federal eligibility criteria, and one to to estimate Pell Grant award amounts. Read on to learn more!

If you're trying to plan out your college expenses, the ability to estimate your federal aid eligibility can be a big advantage. There are so many factors to take into account, though—it might be hard to know where to begin. 

The good news is that calculating your Pell Grant eligibility probably isn't as hard as you think it is. And there's an added bonus: calculating Pell Grant eligibility will also generate information about other federal aid programs, like Stafford loans and work study. Best of all, it should only take about 10 minutes! Read on to learn about what you need to get started and how to calculate your eligibility. 

If the Reading section of the SAT is challenging for you, you may be wondering what you can do to make sure you’re extra prepared. In this article, I’ve put together our top strategies for gaining confidence and improving your scores.

As you may know, the College Board recently debuted its new version of the SAT. There are some pretty significant changes in the Critical Reading section, and you should make sure you're fully prepared for what’s ahead.

In this article I’ll tell you what the major differences are and how you can make sure you’re using the right studying strategies to get ready for the redesigned SAT.

In high school, I had a history teacher who was known for going off on tangents—he would start giving us his lesson on the French Revolution but end up telling us all about the Peregrine falcon. These facts were interesting, but they were hardly relevant to the issue at hand (how Marie Antoinette got her head chopped off).