A standard 6-sided die is a cube, which is one of the five platonic 3-dimensional solids. The icosahedron is a 3-dimensional shape with 20 triangular sides, and is used as dice in some games (e.g., Dungeons and Dragons) to allow more variable random outcomes. Over the course of a game, a player records the outcome of several die rolls: 19 7 15 20 4 1 8 18 1 3 4 14 10 7 1 4 8 1 1. Calculate X 2. Calculate E(X+1) 3. Calculate EX? 4. Calculate (EX)? 5. What was the mean die roll? 6. What was the median die roll? 7. Create a grouped frequency distribution table for these die rolls with intervals of width 4

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.