Expression 20: 0 "x" less than or equal to 2 left brace, "o" Subscript, 2 , Baseline plus "o" Subscript, 1 , Baseline less than or equal to 0 , right brace Has graph.0x≤2o2+o1≤0
20
Expression 21: 0 "x" less than or equal to 2 left brace, "o" Subscript, 2 , Baseline plus "o" Subscript, 1 , Baseline greater than or equal to 0 , right brace Has graph.0x≤2o2+o1≥0