Expression 2: "y" Subscript, 1 , Baseline tilde "a" "r" Superscript, "x" Subscript, 1 , Baseline , Baseline minus "b" "x" Subscript, 1 , Baseliney1~arx1−bx1
2
Expression 3: "f" left parenthesis, "x" , right parenthesis equals 600 left parenthesis, 0.8 7 5 , right parenthesis Superscript, "x" , Baseline minus 1.0 1 "x"fx=6000.875x−1.01x