The SAT question of the day is a math question that goes like this:
The game: substitution. Continue reading
Tag Archives: algebra
SAT Question of the Day Explained – November 27, 2014 – Math, Algebra
Today’s SAT question of the day is an algebra question about the following quadratic equation:
Given that this equation contains the points (-2, 0) and (6, 0), we are asked to find c.
There are multiple ways of solving this, but I will show you the shortest. The first step is to think about the information we are given: why do they give us these two points?
ACT Question of the Day Explained – March 19, 2014 – Math
Today’s ACT question of the day is an algebra question that’s great practice for either test. The question:
For all x > 0, 
simplifies to:
Let’s knock out the numerator first. Continue reading
SAT Question of the Day Explained – March 17, 2014 – Math, Algebra
Today’s SAT question of the day is an algebra translation question.
The question:
First, 3 is subtracted from x and the square root of the difference is taken. Then, 5 is added to the result, giving a final result of 9. What is the value of x?
If we translate carefully, this problem is a breeze. Continue reading
SAT Question of the Day Explained – February 27, 2014 – Math, Algebra
Today’s SAT question of the day is a medium-difficulty math question that asks us about the term “undefined”. Undefined, for the purposes of the SAT, means that we’d be dividing by zero. Every time you see that word, translate it into “divide by zero.”
Today we need to know what value of x would make this equation undefined for y:
ACT Question of the Day – February 23, 2014 – Math, Algebra
Here’s today’s ACT algebra question:
If x + 2y = 1, and 2x + y = 5, then x + y = ?
Let’s get to work! Continue reading
SAT Question of the Day Explained – February 18, 2014 – Math
Today’s SAT question of the day is an algebra question that’s rated hard – but I don’t think you’ll agree with the rating!
The question:
If x + 2x is 5 more than y + 2y, then x – y =
Step 1: translation. Continue reading
ACT Question of the Day Explained – February 15, 2014 – Math, Trapezoids
Today’s ACT question is a flashback to a week ago – working with trapezoids.
SAT Question of the Day Explained – February 15, 2014 – Math, Algebra
Today’s SAT question of the day is a math question that is rated hard. If you work along with me step by step, I think you’ll see that this problem really isn’t so hard after all. In fact, we are even going to discuss two ways to solve it.
Here is the problem: we have a revenue model that is expressed by r(p) = 2,000p – 10p^2. We need to know which of the values in the answer choices will give us the greatest revenue. Continue reading
SAT Question of the Day Explained – February 12, 2014 – Algebra
Today’s SAT question of the day is an easy algebra question and a great chance to review our algebra basics.
#1 rule of algebra on the SAT: answer the right question. Don’t answer a question that isn’t being asked!
So, they want to know what x – y = when (x/y) = 3 and x =12.