Q: There are several functions on the calculator that will be essential for Algebra, Trigonometry, Geometry, Calculus, and more. Find the following functions on your calculator:   Basic Operations    Operation  Function     +   Addition     -   Subtraction (not negative)     x   Multiplication (There is often an x key for variables as well)     ÷   Division     ^   Raise to the power of     yx   y to the power of x     √ or Sqrt   Square root     ex   Exponential     sin   Sine function     sin-1   Inverse sine function     cos   Cosine function     cos-1   Inverse cosine function     tan   Tangent function     tan-1   Inverse tangent function     ln   Log to the base of e     log   Log base 10     (-) or neg   Denotes negative number     ()   Parentheses for denoting order of operations     π   Inserts pi     Mode   Switches between degrees and radians While the bulk of the most common functions will have their own keys (e.g., the SIN key), things like inverse functions (e.g., SIN-1) or less-common functions (e.g., the square root √) will be listed above other keys.   Some calculators have a "Shift" key instead of a "2ND" key. In many cases, the color of the "Shift" or "2ND" key will match the color of the function's text. Whenever you type a left parenthesis, you must close it with a right one; similarly, if you type a total of five left parentheses, you'll have to close them with five right ones. This is important when entering larger calculations, as leaving out a parenthesis can cause the equation to return a far different answer than you should have. You can change between displaying values in terms of degrees (fractions of 360) or radians (decimals using pi as the basis) by pressing the MODE key, using the arrow keys to select RADIANS or DEGREES, and pressing the ENTER button.  This is important when performing Trigonometry calculations. If you notice that your equations are returning decimal values instead of degrees (or vice versa), you'll need to change this setting. Saving your results and pulling them back later is an essential skill for dealing with longer problems. There are a couple of different ways to use stored information:  Use the Answer function to recall the last displayed answer to an equation. For example, if you just entered 2^4, typing in -10 and pressing ENTER would subtract 10 from the solution. Press STO after retrieving your preferred answer, press ALPHA, select a letter, and press ENTER. You can then use that letter as a placeholder for your answer. If you ever need to exit a menu or remove several lines' worth of equations from the calculator screen, you can press the CLEAR button near the top of the keypad to do so. You can also press the 2ND or Shift key and then press whichever button has "QUIT" listed over it (in most cases, this is the MODE key).
A: Find the important functions. Familiarize yourself with secondary functions. Always close your parentheses. Switch between degrees and radians. Learn how to save and restore. Clear the screen.

Q: Get very into the Thriller dance by dressing up like a zombie. First, look for some old clothes that you won’t wear anywhere. You can wear pants or a skirt and shirt. Or, you can wear a dress. The choice is yours. 1980s style clothing is ideal because that’s the decade Thriller came out. Use scissors or your hands to tear them up so that they look very old. You can find cheap clothes at a thrift shop if you don’t have any clothes you’re willing to rip up. A zombie will probably not have very neat hair. Run your fingers through your hair to make it very untidy. You can use a comb to tease your hair into different directions. Use hairspray to get the unkempt hairstyle to hold. Place a few leaves or twigs in your hair if you want step up the zombie-like appearance. Your goal with your makeup is to make it look like you’ve been long dead and rotting. Wear very light foundation to give you a pale appearance. Use dark eye shadow or black eyeliner to create dark circles around your eyes. Apply more of the dark eye shadow to your cheeks to make them look gaunt. Next, take purple and reddish eye shadow and apply it to look like wounds around your face.  You can buy fake wound kits at many costume stores. Wear zombie contacts for an extra creepy appearance. A zombie costume is not complete without fake blood. Purchase fake blood from costume, or make  it out of red food coloring, water, and corn syrup. Spread the blood on your face, arms, and legs if they are exposed. Pour it on your torn clothes, and pour a small amount into your hair. Make sure that the fake blood does not irritate your skin before putting a lot of it on your skin. Mix in some dirt into the blood to look extra dirty.
A:
Rip up some old clothes. Make your hair untidy. Wear zombie makeup. Put on fake blood.