diff --git a/task-1/book.js b/task-1/book.js
index 8b49ecc..118512e 100644
--- a/task-1/book.js
+++ b/task-1/book.js
@@ -1,3 +1,20 @@
 function isBookApplicable(searchString) {
-  // Your code here
-}
+
+  // Normalize the search string: trim whitespace and convert to lowercase
+    const normalizedSearch = searchString.trim().toLowerCase();
+    
+    // Define the book title and convert to lowercase
+    const bookTitle = "The fundamentals of JavaScript".toLowerCase();
+    
+    // Check if the book title contains the search string
+    return bookTitle.includes(normalizedSearch);
+} 
+
+// Test 
+console.log(isBookApplicable("javascript"));
+console.log(isBookApplicable("javascript "));
+console.log(isBookApplicable("python"));
+console.log(isBookApplicable("JavaScript"));
+console.log(isBookApplicable("JAVASCRIPT"));
+
+
diff --git a/task-2/parse-date.js b/task-2/parse-date.js
index 877a3aa..863b80d 100644
--- a/task-2/parse-date.js
+++ b/task-2/parse-date.js
@@ -1 +1,38 @@
-// Your code here
+function parseDateString(dateString) {
+    const [format, dateValues] = dateString.split(" "); // split by space
+    const parts = dateValues.split("-"); // hyphens as separators
+    
+//  added extra functionality to handle non-numeric values
+    let first, second, year;
+    
+    if (isNaN(parts[0])) {
+        first = 0;
+    } else {
+        first = parseInt(parts[0]);
+    }
+    
+    if (isNaN(parts[1])) {
+        second = 0;
+    } else {
+        second = parseInt(parts[1]);
+    }
+    
+    if (isNaN(parts[2])) {
+        year = 0;
+    } else {
+        year = parseInt(parts[2]);
+    }
+    /*
+     only making it return 0 to folollow the "All returned values should be numbers,
+     not strings" requirement
+     */
+    if (format === "MDY") {
+        return { day: second, month: first, year: year };
+    }
+    return { day: first, month: second, year: year };
+}
+
+console.log(parseDateString("MDY ten-twentyone-1983"));
+console.log(parseDateString("DMY 21-10-1983"));
+console.log(parseDateString("MDY 03-15-2024"));
+console.log(parseDateString("DMY 15-0three-2024"));
diff --git a/task-3/date.js b/task-3/date.js
new file mode 100644
index 0000000..77f6654
--- /dev/null
+++ b/task-3/date.js
@@ -0,0 +1,23 @@
+export function convertHoursToMinutes(hours) {
+  return hours * 60;
+}
+
+export function convertMinutesToHours(minutes) {
+  return minutes / 60;
+}
+
+export function convertDaysToHours(days) {
+  return days * 24;
+}
+
+export function convertHoursToDays(hours) {
+  return hours / 24;
+}
+
+export function convertMinutesToSeconds(minutes) {
+  return minutes * 60;
+}
+
+export function convertSecondsToMinutes(seconds) {
+  return seconds / 60;
+}
diff --git a/task-4/cleanup.js b/task-4/cleanup.js
index 207523a..2c77d9a 100644
--- a/task-4/cleanup.js
+++ b/task-4/cleanup.js
@@ -1,80 +1,59 @@
-// Temperature conversion and weather report for City 1
-let cityName1 = "Amsterdam";
-let tempCelsius1 = 22;
-let tempFahrenheit1 = (tempCelsius1 * 9 / 5) + 32;
-let tempKelvin1 = tempCelsius1 + 273.15;
-console.log("Weather Report for " + cityName1);
-console.log("Temperature: " + tempCelsius1 + "°C");
-console.log("Temperature: " + tempFahrenheit1 + "°F");
-console.log("Temperature: " + tempKelvin1 + "K");
-if (tempCelsius1 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius1 >= 0 && tempCelsius1 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius1 >= 10 && tempCelsius1 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius1 >= 20 && tempCelsius1 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
+// Converts temperature from Celsius to Fahrenheit
+function celsiusToFahrenheit(celsius) {
+  return (celsius * 9 / 5) + 32;
 }
-console.log("---");
 
-// Temperature conversion and weather report for City 2
-let cityName2 = "Berlin";
-let tempCelsius2 = 15;
-let tempFahrenheit2 = (tempCelsius2 * 9 / 5) + 32;
-let tempKelvin2 = tempCelsius2 + 273.15;
-console.log("Weather Report for " + cityName2);
-console.log("Temperature: " + tempCelsius2 + "°C");
-console.log("Temperature: " + tempFahrenheit2 + "°F");
-console.log("Temperature: " + tempKelvin2 + "K");
-if (tempCelsius2 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius2 >= 0 && tempCelsius2 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius2 >= 10 && tempCelsius2 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius2 >= 20 && tempCelsius2 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
+// Converts temperature from Celsius to Kelvin
+function celsiusToKelvin(celsius) {
+  return celsius + 273.15;
 }
-console.log("---");
 
-// Temperature conversion and weather report for City 3
-let cityName3 = "Copenhagen";
-let tempCelsius3 = -5;
-let tempFahrenheit3 = (tempCelsius3 * 9 / 5) + 32;
-let tempKelvin3 = tempCelsius3 + 273.15;
-console.log("Weather Report for " + cityName3);
-console.log("Temperature: " + tempCelsius3 + "°C");
-console.log("Temperature: " + tempFahrenheit3 + "°F");
-console.log("Temperature: " + tempKelvin3 + "K");
-if (tempCelsius3 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius3 >= 0 && tempCelsius3 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius3 >= 10 && tempCelsius3 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius3 >= 20 && tempCelsius3 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
+//etermines weather status based on Celsius temperature
+function getWeatherStatus(tempCelsius) {
+  if (tempCelsius < 0) {
+    return "Freezing";
+  } else if (tempCelsius >= 0 && tempCelsius < 10) {
+    return "Cold";
+  } else if (tempCelsius >= 10 && tempCelsius < 20) {
+    return "Mild";
+  } else if (tempCelsius >= 20 && tempCelsius < 30) {
+    return "Warm";
+  } else {
+    return "Hot";
+  }
 }
-console.log("---");
 
-// Wind chill calculation for City 1
-let windSpeed1 = 15;
-let windChill1 = 13.12 + 0.6215 * tempCelsius1 - 11.37 * Math.pow(windSpeed1, 0.16) + 0.3965 * tempCelsius1 * Math.pow(windSpeed1, 0.16);
-console.log("Wind chill in " + cityName1 + ": " + windChill1.toFixed(2) + "°C");
+// Calculates wind chill based on Celsius temperature and wind speed in km/h
+function calculateWindChill(tempCelsius, windSpeed) {
+  const constant = 13.12;
+  const tempCoeff1 = 0.6215;
+  const windCoeff1 = 11.37;
+  const windExponent = 0.16;
+  const tempCoeff2 = 0.3965;
+  
+  return constant + 
+         tempCoeff1 * tempCelsius - 
+         windCoeff1 * Math.pow(windSpeed, windExponent) + 
+         tempCoeff2 * tempCelsius * Math.pow(windSpeed, windExponent);
+}
 
-// Wind chill calculation for City 2
-let windSpeed2 = 20;
-let windChill2 = 13.12 + 0.6215 * tempCelsius2 - 11.37 * Math.pow(windSpeed2, 0.16) + 0.3965 * tempCelsius2 * Math.pow(windSpeed2, 0.16);
-console.log("Wind chill in " + cityName2 + ": " + windChill2.toFixed(2) + "°C");
+// Generates a weather report for a given city
+function generateWeatherReport(cityName, tempCelsius, windSpeed) {
+  const tempFahrenheit = celsiusToFahrenheit(tempCelsius);
+  const tempKelvin = celsiusToKelvin(tempCelsius);
+  const weatherStatus = getWeatherStatus(tempCelsius);
+  const windChill = calculateWindChill(tempCelsius, windSpeed);
+  
+  console.log("Weather Report for " + cityName);
+  console.log("Temperature: " + tempCelsius + "°C");
+  console.log("Temperature: " + tempFahrenheit + "°F");
+  console.log("Temperature: " + tempKelvin + "K");
+  console.log("Status: " + weatherStatus);
+  console.log("Wind chill: " + windChill.toFixed(2) + "°C");
+  console.log("---");
+}
 
-// Wind chill calculation for City 3
-let windSpeed3 = 25;
-let windChill3 = 13.12 + 0.6215 * tempCelsius3 - 11.37 * Math.pow(windSpeed3, 0.16) + 0.3965 * tempCelsius3 * Math.pow(windSpeed3, 0.16);
-console.log("Wind chill in " + cityName3 + ": " + windChill3.toFixed(2) + "°C");
\ No newline at end of file
+// Example 
+generateWeatherReport("Amsterdam", 22, 15);
+generateWeatherReport("Berlin", 15, 20);
+generateWeatherReport("Copenhagen", -5, 25);
\ No newline at end of file