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Let me go ahead and help you start on these questions... Question 1: From the question we can see that we are talking about 2 jets, but we only are concerned with a single variable.  Can you tell me the variable?   Time!   Let t = time that the plane was in flight...

Hi Trisha,   I wish I was able to attach some pictures to the post to illustrate, but let me go ahead and explain the best I can with just writing.   Shifting...what's that? Whenever we want to shift a function, in any direction, our goal is to manipulate the variable...

Hi Dalia,   This question is testing whether you know and understand your trig tables.  Here is our table:   Angle     |  Sin (Angle) |  Cos(Angle)  |  Tan (Angle) Degrees 0           |    ...

Hi M,   To start off, we have to determine how many equations we need to solve this problem.  Seeing that the problem involves a "larger number" and a "smaller number" and that we are given 2 different constraints we can be assured that we will need 2 variables...

Hi Roseland,   The first thing we can notice from this question is that we need two variables to write our system of equations(Ruth's age and the son's age).; this also means that we need two equations!   Current Day:   let R=Ruth's Age  let s= Ruth's...

Hi Sun, Let me start by saying very interesting and "outside of the box" question.  Although I don't think many can really give you a precise answer (including myself), I did find an interesting article that you may find interesting.  Take a look at it and let me know...

So it turns out that there are really only 2 things that affect the velocity of a wave in a medium. The medium's change in shape (elasticity) The medium's change in motion (inertia) This illustrates a pretty interesting concept of wave physics.  Whether a turtle is crawling...

Hi Bryan,     This is a really good question!  Not only is it a favorite topic for the algebra regents, but it also tests how comprehensively we understand equations in math.  We have to start off by recalling to memory that a straight line (also called a linear equation)...