1 12687dd9 2023-08-04 jrmu ;; The first three lines of this file were inserted by DrScheme. They record metadata
 2 12687dd9 2023-08-04 jrmu ;; about the language level of this file in a form that our tools can easily process.
 3 12687dd9 2023-08-04 jrmu #reader(lib "htdp-beginner-reader.ss" "lang")((modname 4.4.2) (read-case-sensitive #t) (teachpacks ((lib "convert.ss" "teachpack" "htdp"))) (htdp-settings #8(#t constructor repeating-decimal #f #t none #f ((lib "convert.ss" "teachpack" "htdp")))))
 4 12687dd9 2023-08-04 jrmu (define BRACKET2 1000)
 5 12687dd9 2023-08-04 jrmu (define BRACKET3 5000)
 6 12687dd9 2023-08-04 jrmu (define BRACKETINT1 0.04)
 7 12687dd9 2023-08-04 jrmu (define BRACKETINT2 0.045)
 8 12687dd9 2023-08-04 jrmu (define BRACKETINT3 0.05)
 9 12687dd9 2023-08-04 jrmu 
10 12687dd9 2023-08-04 jrmu ;; interest-rate : number -> number
11 12687dd9 2023-08-04 jrmu ;; Given amount, it computes the interest rate
12 12687dd9 2023-08-04 jrmu ;; Divides the amount into brackets by using BRACKET2 and BRACKET3
13 12687dd9 2023-08-04 jrmu ;; Gives the interest rate based on where the value falls between the two brackets
14 12687dd9 2023-08-04 jrmu ;; BRACKETINT1, BRACKETINT2, BRACKETINT3 (bracket interest - the interest rate for
15 12687dd9 2023-08-04 jrmu ;; a given bracket)
16 12687dd9 2023-08-04 jrmu 
17 12687dd9 2023-08-04 jrmu (define (interest-rate amount)
18 12687dd9 2023-08-04 jrmu   (cond 
19 12687dd9 2023-08-04 jrmu     [(<= amount BRACKET2) BRACKETINT1]
20 12687dd9 2023-08-04 jrmu     [(<= amount BRACKET3) BRACKETINT2]
21 12687dd9 2023-08-04 jrmu     [(> amount BRACKET3) BRACKETINT3]))
22 12687dd9 2023-08-04 jrmu 
23 12687dd9 2023-08-04 jrmu ;; interest : number -> number
24 12687dd9 2023-08-04 jrmu ;; Given the amount, calculates the total interest by multiplying the amount
25 12687dd9 2023-08-04 jrmu ;; by the interest-rate
26 12687dd9 2023-08-04 jrmu 
27 12687dd9 2023-08-04 jrmu (define (interest amount)
28 12687dd9 2023-08-04 jrmu   (* amount (interest-rate amount)))