Mathematics ch9 and ch2

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Across
  1. 4. Breaking down a number or expression into its factors
  2. 7. A number used to multiply a variable
  3. 8. A letter that represents an unknown number
  4. 9. The sum of all values in the data set divided by the number of values
Down
  1. 1. A combination of variables, constants, and operators
  2. 2. Relationship where an increase in one quantity leads to an increase in another
  3. 3. The difference between the highest and lowest values
  4. 5. The space enclosed by a 3D figure
  5. 6. The middle value when data is arranged in order