Referenced from lesson Problem Decomposition

Directions: Use the Design Recipe to write a function `revenue`, which takes in the number of glasses sold at \$1.75 apiece and calculates the total revenue.

 Contract and Purpose Statement

Every contract has three parts…​

; _______:_______->______

; ___________________________________________________________

 Examples

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

(EXAMPLE (_______ __)___________)

(EXAMPLE (_______ __)___________)

 Definition

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

(define (_______ ________)

__________________)

Directions: Use the Design Recipe to write a function `cost`, which takes in the number of glasses sold and calculates the total cost of materials if each glass costs \$.30 to make.

 Contract and Purpose Statement

Every contract has three parts…​

; ____:_______->______

; ________________________________________________________

 Examples

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

(EXAMPLE (____ __)__________)

(EXAMPLE (____ __)__________)

 Definition

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

(define (____ ________)

_________________)

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