Q: While trying to send messages during a time of political turmoil, Mary, Queen of Scots, used symbols as a substitute code for English letters and common words. Some features of Mary's code you might find useful for your own crypto-education include:  The use of simple shapes for high frequency letters, like Mary's use of a circle for the letter /A/. This saves time while encoding. Common symbols used as part of the new code language, like Mary's use of "8" as code for the letter "Y." These can confuse code breakers who might interpret this as a number and not a code symbol. Unique symbols for common words. In Mary's day, "pray" and "bearer" received unique symbols, but these were more common then than they are today. Still, using symbols for frequent words and phrases saves time and adds complexity. Code phrases can collapse a lot of meaning into a single phrase. Even many kinds of military alert, like the DEFCON system, are simply well-known codes for a state of defense readiness. Come up with suitable code words/phrases in your everyday life.  For example, instead of saying "I've got to run to my locker" among your friends, you might use the code word "Sloppy." To let your friends know that the person you want to date has entered the room, you might say the code phrase, "My cousin Bruce likes hockey, too." Books are relatively easy to come by. If a book has been decided upon as the key to a code, when you receive a message you can go to a bookstore or library to look up the key to decode it.  For example, you might decide on using Frank Herbert's Dune, with code numbers representing the page, line, and number word starting from the left.   Encoded Message: 224.10.1 ; 187.15.1 ; 163.1.7 ; 309.4.4  Decoded Message: I'm hiding my words.
A: Employ the code used by Mary, Queen of Scots. Use code phrases similar to military alerts. Encode messages with a book key code.

Article: Total monthly rent is the amount of rent charged every month that the tenant will occupy the apartment, condo or house for a full month. Divide the total monthly rent amount by the number of days in the month to determine a daily rent rate.  Use the current month. January, March, May, July, August, October and December have 31 days. April, June, September and November have 30 days. February has 28 days except for leap years, when it has 29 days. For example, in September, if you were paying $900 a month, you would divide 900 by 30 since September has 30 days. This equals a daily rent rate of $30. Multiply this daily rent rate by the total number of occupancy days to determine the prorated rent amount.  Number of occupancy days is how many days you will be renting the apartment before the first day of the next month begins.  For example, if you moved in on September 20, your number of occupancy days is 11 (just like hotels book rooms, you include the day you move in). 11 days x 30$/day = 330$ total. ANSWER = [(rent for a month) / 30] x # of days you’re staying
Question: What is a summary of what this article is about?
Calculate daily rent. Calculate prorated rent.

Problem: Article: Just slide the panel back on and firmly screw it in place at the back of the CPU tower. Refer to the picture you took, if indeed you took one, to hook up all the cables you removed from the back of the CPU tower. Turn your computer on by pressing the Power button and waiting for the computer to boot up. When Windows is loaded, head to My Computer by clicking on the Orb or Windows icon on the bottom-left corner of the screen and then clicking “Computer” or “My Computer” from the menu. You should see a new drive available for you to use among the other drive partitions you had before. You can now paste and install programs into the new drive for improved performance.
Summary: Return the side panel to the CPU tower. Reattach all the cables to the CPU tower. Power on the computer. Check out the new SSD drive.

INPUT ARTICLE: Article: A butter knife is ideal, but you may also use a putty knife or a razor with an attached guard. Hold the blade flat against the surface and slowly slide the knife over it to scrape off the residue. Be gentle to avoid scratching the surface. If you’re worried about scratches, skip scraping. Dampen the cloth with isopropyl rubbing alcohol from the medical section at any drug or general store. Make sure the cloth is clean and soft to avoid damaging the surface you’re treating. Then, gently rub the cloth back and forth over the area until the adhesive comes off. The combination of the rubbing alcohol and friction from rubbing will remove most of it. Acetone or nail polish remover may be used instead, but are more likely to damage painted surfaces. Place about a tablespoon of liquid dish detergent in two cups of water and stir until the mixture is bubbly. Then, dip a soft cloth into the soapy water and use it to gently scrub the residue. Keep rubbing the area until it no longer feels slippery or sticky to the touch. Any gentle or medium-strength soap can be used. Avoid ones that are designed for grease and other tough stains. Rub the surface with a clean cloth or paper towel to absorb the water. The surface should no longer feel rough or sticky from the residue.

SUMMARY: Scrape the residue off with a dull blade. Soak a soft cloth in rubbing alcohol and rub at the area. Scrub the area with a mixture of dish soap and warm water. Dry the surface with a cloth.

Q: If the problem tells you the diameter of the circle, it's easy to find the radius. If you are working with an actual circle, measure the diameter by placing a ruler so its edge passes straight through the circle's center, touching the circle on both sides.  If you're not sure where the circle center is, put the ruler down across your best guess. Hold the zero mark of the ruler steady against the circle, and slowly move the other end back and forth around the circle's edge. The highest measurement you can find is the diameter. For example, you might have a circle with a diameter of 4 centimeters. A circle's radius is always half the length of its diameter.   For example, if the diameter is 4 cm, the radius equals 4 cm ÷ 2 = 2 cm. In math formulas, the radius is r and the diameter is d. You might see this step in your textbook as r=d2{\displaystyle r={\frac {d}{2}}}.
A:
Check the problem for a diameter. Divide the diameter by two.