Returns T if each argument is numerically greater than or equal to the argument to its right; otherwise returns nil
(>= numstr [numstr] ...)
T, if each argument is numerically greater than or equal to the argument to its right; otherwise nil. If only one argument is supplied, >= returns T.
(>= 120 17) returns T
(>= "c" "c") returns T
(>= 3.5 1792) returns nil
(>= 77 4 4) returns T
(>= 77 4 9) returns nil