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Hi, Ashley!   To find the derivative of this function, there are a couple of derivative rules you need to know: 1. Product Rule:  Part1 * (derivative of Part2) + (derivative of Part1) * Part2 2. Quotient Rule:  ho d hi - hi d ho        ...

Hi, Jenna!   First of all, since this forum is designed as a place for tutors to provide academic support to students, I am not going to answer all of the questions that you posted.  However, I will do a couple to help you get an idea of how to translate english sentences into...

Step 1: Identify variables. Let x = # lbs of \$0.71/lb candy Let y = # lbs of \$1.25/lb candy   Step 2: Set up equations. Since there are 2 variables, we need at least 2 equations. Final mixture is a total of 8 lbs, so EQ 1: x + y = 8 Selling price is \$0.91/lb, so...

Hi, Kitesha!   For this question (and the other question that you posted), you want to identify what all of the measurements refer to.  What is the common element in each measurement?  For instance, in this question, each side length of the triangle is given by referring to...

Hi, Claire!   To answer this question, I always like to start with a picture.  Or at least create one in my mind!  A square is a shape with equal side lengths and right angles.  Since the question is asking you to find the length of the side, I'm going to use x to represent...

Hi, Suzy!   I love these kinds of problems!  They always remind me of the math game 24 where you are given 4 numbers and the objective is to use those 4 numbers (only once) and addition, subtraction, multiplication, and division to equal 24.  Great game (at least for a math...

Hi, Grace! These kinds of word problems can be tricky because it talks about more than one variable: the days that Walter gets paid \$3.33 and the days that Walter gets paid 1/3 more (3.33 + (1/3)*3.33 = \$4.44).  To solve any situation where you have more than one variable, you need to set...

Hi, Jasmyn!   The number of local maximums and minimums of a function are calculated by determining how many places have a slope of zero.  In other words, you need to answer the question "how many zeroes does the function f'(x) have?"   In this case, you...

Hi, Ke!   So the idea with literal equations is to get one variable in terms of all the rest.  In this equation, we are trying to solve for x in terms of y (meaning that we are trying to get x all by itself with y on the other side of the equal sign).  Whenever you have a...

Hi, Paula!   I know that you asked this a few days ago and have two excellent answers above, but I just wanted to add in my two cents! :)  The z-score of any raw data point tells you exactly how many standard deviations away from the mean an individual data point is.  In high...

Hi, Bron!   With any question like this that describes a situation, I always like to start out by drawing a picture.  That makes everything much easier to visualize.  Now, it's not easy to draw a picture on a computer, but here's my best attempt! :)   101  ↓ (left...

Hi, Duane!   To find out how much tax is paid, you need to find 7% of \$96.  If you translate the phrase "7% of 96" into a math equation, the word "of" means to multiply.  This gives you:   7% of 96 7% * 96   Now write 7% as...

Hi, Brooke!   The word "squared" means to raise a number to the power of two - so 2 becomes the exponent.   In the case of writing "9 squared", that would look like 92.   As a side note, the word "cubed" means to raise a number...

Hi, Issamar!   Step 1: Set up your equations based on the descriptions in the question. (Note: "varies directly" means that the first part is equal to the second part multiplied by some constant, k.) 16y = k1 * x z = k2 * y2   Step 2: Use the...

Hi, Brittany!   The best way to find two integers when you've given a problem like this is to assign a variable to each integer, write two equations expressing what is written in the question, and then solve the system of equations.   Step 1: Assign the variables using...

Hi, Mikia!   I assume that the question is asking for the real zeros of x4 - 5x3 + 6x2 - x - 2 = 0.  Based on that assumption, I would find the real solution values by graphing the equation on your graphing calculator and looking at where the function crosses...

Hi, Billy!   Word problems can be really tough!    Step 1: The first step to do is to pick out any important information that they give you.  Generally, anywhere a number is mentioned is important.  Identifying what you are solving for is also important. ...

Hi, Tamaria!   No worries about having trouble with math.  A lot of people do!  Let's walk through the problem step by step, and don't forget about the order of operations: PEMDAS!  (PEMDAS stands for Parenthesis, Exponents, Multiplication/Division - in the order of which...

Hi, Robert!   Think of it this way:  If you are packing the crates yourself, and you have 225 boxes to place in crates, how many crates would you be able to fill?  Each crate can only hold 9 boxes.   There are two ways you could do this problem.  The first...

Hi, Morgan!   I've never condensed a log problem that had 3 subtractions in a row, but the rule should still hold true: Log A - Log B = Log (A/B)  (In words, that's Log of A minus the Log of B equals the Log of A divided by B).   Also, subtraction is done as you...