Expression 2: "y" equals "x" minus 1 left brace, 2 less than or equal to "x" less than or equal to 4 , right bracey=x−12≤x≤4
2
Expression 3: StartFraction, 1 Over 81 , EndFraction left parenthesis, negative 7 "x" to the 5th power plus 16 "x" to the 4th power plus 38 "x" cubed minus 52 "x" squared minus 119 "x" plus 191 , right parenthesis left brace, negative 1 less than or equal to "x" less than or equal to 2 , right brace181−7x5+16x4+38x3−52x2−119x+191−1≤x≤2