(@problem 2) ;; Given the definitions below (LO, HI, and foo), write the ;; step-by-step evaluation of this expression: ;; ;; (foo (* 2 (+ 16 15))) ;; ;; Be sure to show every intermediate evaluation step, including the original ;; expression and the final result. Your steps must not be commented out.

(define LO 50) (define HI 100)

(define (foo x) (if (< x LO) "too low" (if (> x HI) "too high" (string-append "all good: " (number->string x)))))