Death and Piecewise Linear Functions

Although this may seem a little gruesome, it is not uncommon for businesses to give discounts for volume sales. In this case, a mortician charges less per pound for bodies weighing more than a certain amount.

The local mortician charges by the pound for embalming according to the following table:

piecewise_lin_death_01

Find a piecewise linear function that models the cost as a function of weight.

Continue reading Death and Piecewise Linear Functions

Use a Blog to Help Teach Your Math Class (Part 5)

laptop_02In Part 3 of this series, I demonstrated how easy it is to upload an image file to WordPress. For a mathematics teacher like myself, most of these images files are images of equations or graphs. In this post I want to go into more detail on how I capture these images using a screen capture utility called Snagit produced by Techsmith. Although there are many screen capture apps out there, Snagit is my favorite even though it is not free.

Continue reading Use a Blog to Help Teach Your Math Class (Part 5)

Use a Blog to Help Teach Your Math Class (Part 4)

theme_01

In the first post in this series, we briefly looked at what a theme is and what it does for your blog. Simply put, a theme in WordPress controls the overall look and how information is presented on a blog. The screenshot above shows several themes produced by WordPress. Each year, the organization produces a new theme. By picking a theme from this set, you can be guaranteed that it will be compatible with WordPress and any future upgrades to WordPress.

Continue reading Use a Blog to Help Teach Your Math Class (Part 4)

Your Questions Answered