Problem 2: Make Adder (100 pts)

Write the procedure make-adder which takes in an initial number, n, and then returns a procedure. This returned procedure takes in a number x and returns the result of x + n.

Hint: To return a procedure, you can either return a lambda expression or define another nested procedure. Remember that Scheme will automatically return the last clause in your procedure.

(define (make-adder n)
  'YOUR-CODE-HERE
)

;;; Tests
; scm> (define adder (make-adder 5))
; adder
; scm> (adder 8)
; 13