How many gallons of a 70% alcohol solution must be added to 30 gallons of a 10% alcohol solution in order to produce a new mixture, a 20% alcohol solution?
Category: Labs
Lissajous Figures
We often see Lissajous figures in old sci-fi movies because they are so cool. As you play with them I think you will find them as fascinating as I do. They created those figures by graphing points as a function of a third variable (the parameter). We can do the same and in the process come to understand Parametric Functions.
Lease or Buy
If you are in the market for a new car, you often have a decision to make. Do you want to buy the car or lease it. I have, over the years, developed a simple model to help me decide. I call it my rule of 6.
Inverse of Linear Functions
What does a linear function look like when we interchange the inputs and outputs, that is make the x-axis the y-axis and vice versa.
Introducing Subtraction
What if you built a rule that would enable you to count backwards? How would it be the opposite of addition? What would happen if it goes past zero?