### Manipulating Algebraic Expressions

See attached file for full problem description. 1. Write each intervals in absolute value notation. a) xE(0,9) The midpoint of the interval (0+9)/2. Since 9-4.5=4.5, each point in the interval is 4.5 units or less from the number 4.5. Thus the interval can be described as: I x-4.5I less than or equal to 4.5. b) xE(-