Referenced from lesson Sam the Butterfly - Applying Inequalities

Directions: Use the Design Recipe to write a function onscreen?, which takes in an x-coordinate and checks to see if Sam is safe on the left while also being safe on the right.

Contract and Purpose Statement

Every contract has three parts…​

; _________:_______->_______

; ___________________________________________________________________


Write some examples, then circle and label what changes…​

(EXAMPLE (_________ ____) __________________________________________)

(EXAMPLE (_________ _____) ____________________________________________)


Write the definition, giving variable names to all your input values…​

(define (_________ __)


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