Saving a workbook with a new name allows you to keep the original file unchanged.  

A 52 year old female with complaints of abdominal pressure, increasing abdominal girth, ‘crampy’ abdominal pain and decreased ability to eat was referred for an abdominal ultrasound by her physician. Medical history includes mucinous cystadenocarcinoma of the appendix.  The sonogram is most likely suspicious for:

An equation that fits the data set is: 

One advantage of annotating is focusing your questions, reactions and ideas.

Build a medical term meaning softening of the nail.

A skin discoloration or bruise caused by blood collecting under the skin is 

The sweat glands in the underarm and pubic area are called

When you create a C++ class, you are given 4 default methods. What are they and why is it important that you remember that these exist?

A double free can possibly cause arbitrary code to be executed. Do your best to explain how this could happen.

You want to ensure that users do not change any configurations in a settings file for an application. You encrypt the file using AES. Is this good enough? What are the downsides to this approach, if any?