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### Sjögren’s Syndrome Information for the Physician Assistant Exam

*Sjögren’s syndrome* is an autoimmune condition covered on the Physician Assistant Exam (PANCE). It’s characterized by dry eyes and dry mouth or just dry mouth. Antibodies actually form against the salivary [more…]

### Strategies for Answering Multiple-Choice Questions on the ACT

If you have trouble solving an ACT math question, you can apply different strategies with the given answer choices to help you determine which choice is correct. The math section of the ACT is comprised [more…]

### When Should You Use a Calculator on the ACT?

A calculator is a great tool for solving ACT math problems more quickly than you can either in your head or using a pencil and scratch paper. At the same time, however, you want to avoid overusing it for [more…]

### What Kinds of Calculators Are Allowed and Prohibited on the ACT?

When choosing a calculator for the ACT, remember that while some are allowed others are not. Your safest choices include basic, scientific, and graphing calculators; conversely, you need to avoid laptops [more…]

### What Calculator Functions Do You Need to Know for the ACT?

If you have just purchased a calculator for the ACT, you should use it for at least one practice test so you can get the feel of where the important function keys are. For example, if you have a fancy [more…]

### Coordinate Geometry Formulas You Must Know for the ACT

Some of the questions on the ACT Math test deal with coordinate geometry. When solving coordinate geometry problems, there are several useful formulas you should remember: [more…]

### How to Tackle Word Problems on the ACT

A *word problem* (also called a *story problem* or a *problem in a setting*) gives you information in words rather than in just equations and numbers. To answer an ACT word problem, you have to translate the [more…]

### How to Solve Complex Percent Problems on the ACT

Using your calculator to find a result on the ACT is straightforward when you know the number you’re calculating with and the percentage you’re taking. However, some math questions on the ACT will involve [more…]

### How to Calculate Percent Increase and Decrease on the ACT

Many students find math questions that involve percent increase and percent decrease somewhat confusing. The first step to answering these questions correctly on the ACT is identifying them when they’re [more…]

### ACT Strategies for Solving Ratios and Proportions

Some math questions on the ACT will involve ratios and proportions. Both ratio and proportion problems involve comparing quantities, and they require that you know how to work with fractions and how to [more…]

### Six Important Algebra Terms You Must Know for the ACT

Algebra is chock-full of words that are useful but often misunderstood. To do well on the ACT Math test, you should be able to define these important terms: variable, constant, equation, expression, term [more…]

### Strategies for Solving ACT Equations with Extra Variables

Some equations on the ACT Math test may include one or more extra variables. Generally speaking, when an equation has more than one variable, you can’t solve it. As a result, in most cases, you must solve [more…]

### How to Translate Words into Equations on the ACT

Some ACT Math questions give you information about what happens when you perform various operations on an unknown number. To answer these questions, you can let [more…]

### How to Solve Inequalities with Absolute Value on the ACT

As when solving an ACT Math problem that includes an expression with absolute value, you also need to split an inequality with absolute value into two separate inequalities. However, keep in mind one twist [more…]

### Solving ACT Word Problems Using a System of Equations

Solving word problems is one of the most common reasons to use a system of equations. For example, some word problems in the ACT Math test that would be difficult to approach using a single variable are [more…]

### Solving Direct Proportionality Problems on the ACT

The ACT will probably include some math problems that involve direct proportionality. *Direct p**roportionality* refers to a connection between two variables based on either multiplication or division, where [more…]

### Solving Inverse Proportionality Problems on the ACT

The ACT will probably include some math problems that involve inverse proportionality. *Inverse p**roportionality*refers to a connection between two variables based on either multiplication or division, where [more…]

### ACT Trick for Quadratics: How to Quickly Find the Direction of a Parabola

To save time when graphing a quadratic function on the ACT Math test, you can quickly determine the direction of the parabola using a simple trick based on the coefficient [more…]

### ACT Trick for Quadratics: How to Quickly Find the Vertex Location of a Parabola

To save time when graphing a quadratic function on the ACT Math test, you can quickly find the location of the vertex of the parabola in relation to the [more…]

### ACT Trick for Quadratics: How to Quickly Find the *y*-Intercept of a Parabola

To save time when graphing a quadratic function on the ACT Math test, you can quickly find the location of the *y*-intersept of the parabola based on the sign of the variable [more…]

### ACT Strategies for Adding and Subtracting Matrices

For the ACT Math test, you definitely want to know how to work with matrices. Fortunately, adding and subtracting matrices are both simple and similar operations. [more…]

### ACT Strategy for Multiplying a Matrix by a Real Number

You may encounter ACT Math questions that ask you to multiply an entire matrix by a real number. Fortunately, this is a straightforward operation: Simply multiply the integer by every element in the matrix [more…]

### ACT Strategy for Multiplying a Vertical Matrix by a Horizontal Matrix

On the ACT Math test, you’ll probably have to multiply pairs of matrices that have either one row or one column. An easy way to multiply a vertical matrix by a horizontal matrix is to set up a small grid [more…]

### ACT Strategy for Multiplying a Horizontal Matrix by a Vertical Matrix

On the ACT Math test, you’ll probably have to multiply pairs of matrices that have either one row or one column. An easy way to multiply a horizontal matrix by a vertical matrix is to set up a small grid [more…]

### ACT Strategy for Solving a Matrix Using a Determinant

A *determinant* is a common operation performed on a square matrix. On the ACT Math test, the only determinant formula you need to be familiar with is for a 2 x 2 matrix. Here’s the formula for the determinant [more…]