Write in Racket. You may use the Picturing Programs book and the
Racket Help Desk. You may not refer to old code except your
posn-util.rkt.
english-q: string -> boolean: True if every “q” in the word is
followed by a “u”.
ternary-2: number -> number: Find the number of 2s in the base 3
representation of the number. You can look up what base 3 is. Write
your own base 3 converter.