diff --git a/lesson_05/dasiaenglish/lesson_05.md b/lesson_05/dasiaenglish/lesson_05.md
deleted file mode 100644
index 7a6a0f288..000000000
--- a/lesson_05/dasiaenglish/lesson_05.md
+++ /dev/null
@@ -1,12 +0,0 @@
-## User Stories
-
-# Shein app
--As a shopper I would like to virtually try on clothing items to see if they fit or not before purchasing.
-This will help reduce returns and ensure customer satisfaction by allowing users to feel more confident in their purchases.
-
--As a buyer I would like to know exaclty how much I am spending, with a recommendation on what is worth my dolor, by grouping clothes a certain way.
-This will help shoppers make more informed decisions and feel like they're making smart purchases, leading to a better shopping experience.
-
-
--As a fashionesta I want a personalized stylist to creat outfits with what is in my cart, that way I can mix and match my clothes.
- This will enhance the shopping experience by helping users create stylish, personalized outfits, making them more likely to buy multiple items and enjoy their purchase.
\ No newline at end of file
diff --git a/lesson_06/expression/src/expression_calculator.ts b/lesson_06/expression/src/expression_calculator.ts
index 13cb2ca05..838d2cb55 100644
--- a/lesson_06/expression/src/expression_calculator.ts
+++ b/lesson_06/expression/src/expression_calculator.ts
@@ -2,10 +2,27 @@ export class ExpressionCalculator {
   /** Returns the calculation of ((a + b) * c) / d^e */
   calculate(a: number, b: number, c: number, d: number, e: number): number {
     // Implement your code here to return the correct value.
-    return 0;
+    const divide = this.multiply(this.add(a, b), c) / this.pow(d, e)
+    return divide;
   }
 
   pow(base: number, exponent: number): number {
     return Math.pow(base, exponent);
   }
-}
+
+   add(a: number, b: number): number {
+    const sum = a + b;
+    return sum;
+  }
+  
+  divide(a: number, b: number): number {
+    const num = a / b;
+    return num;
+  }
+
+  multiply(a: number, b: number){
+    const num = a * b;
+    return num;
+  }
+  
+  }
\ No newline at end of file
diff --git a/lesson_07/conditionals/src/lesson7.ts b/lesson_07/conditionals/src/lesson7.ts
index 52f45df8b..56123dd2c 100644
--- a/lesson_07/conditionals/src/lesson7.ts
+++ b/lesson_07/conditionals/src/lesson7.ts
@@ -7,7 +7,12 @@ import { computeLexicographicDistance } from "./util.js";
  * @return True if the age corresponds to a voting age and false otherwise.
  */
 export function canVote(age: number): boolean {
-  return false;
+  if (age >= 18) {
+    return true;
+  } else {
+    return false;
+  }
+  
 }
 
 /**
@@ -23,10 +28,12 @@ export function compareStrings(a: string, b: string): number {
   const distance = computeLexicographicDistance(a, b);
 
   // TODO(you): Finish this method.
+  if (distance < 0) {
+    return -1;
+  }
 
-  return 0;
+  return distance;
 }
-
 /**
  * Converts a GPA on the 4.0 scale to the corresponding letter grade using the college board
  * scale. See
@@ -37,17 +44,46 @@ export function compareStrings(a: string, b: string): number {
  * @return The letter grade ("A+", "A", "A-", "B+", etc.).
  */
 export function convertGpaToLetterGrade(gpa: number): string {
-  return "F";
+  if (gpa === 4.0) {
+    return "A";
+  } else if (gpa > 4.0) {
+    return "A";
+  } else if (gpa <= 3.99 && gpa >= 3.7) {
+    return "A-";
+  } else if (gpa <= 3.69 && gpa >= 3.3) {
+    return "B+";
+  } else if (gpa <= 3.29 && gpa >= 3.0) {
+    return "B";
+  } else if (gpa <= 2.99 && gpa >= 2.7) {
+    return "B-";
+  } else if (gpa <= 2.69 && gpa >= 2.3) {
+    return "C+";
+  } else if (gpa <= 2.29 && gpa >= 2.0) {
+    return "C";
+  } else if (gpa <= 1.99 && gpa >= 1.7) {
+    return "C-";
+  } else if (gpa <= 1.69 && gpa >= 1.3) {
+    return "D+";
+  } else if (gpa <= 1.29 && gpa >= 1.0) {
+    return "D";
+  } else {
+    return "F";
+  }
 }
 
-/**
- * Computes the factorial of the given value of `n`.
+/**km
+ * computes the factorial of the given value of `n`.
  *
  * @param n The value for which to compute the factorial.
  * @return The factorial of n.
  */
 export function computeFactorial(n: number): number {
-  return 0;
+  let product = 1;
+  for (let i = 1; i <= n; i++) {
+    product *= i;
+  }
+
+  return product;
 }
 
 /**
@@ -57,7 +93,12 @@ export function computeFactorial(n: number): number {
  * @return The sum of all the values.
  */
 export function addNumbers(values: number[]): number {
-  return 0;
+  let sum = 0; //initialize variable
+
+  for (const value of values) {
+    sum += value; //adds value to each
+  }
+  return sum;
 }
 
 /**
@@ -67,7 +108,21 @@ export function addNumbers(values: number[]): number {
  * @return An array containing the first `n` Fibonacci values.
  */
 export function getFirstNFibonacciNumbers(n: number): number[] {
-  return [];
+  let current = 1;
+  let prev = 0;
+
+  const numbers = [];
+
+  for (let i = 1; i<=n; i++){
+    numbers.push(current);
+    const nextNum = current + prev; // 1
+    prev = current; // 1
+    current = nextNum
+  }
+  
+   
+  
+  return numbers;
 }
 
 /**
@@ -86,12 +141,22 @@ export function binarySearch(
   value: number,
 ): number {
   if (end < start) {
+
+    
     // The range is not valid so just return -1.
     return -1;
   }
 
   const pivotIndex = Math.floor((start + end) / 2); // The index in the middle of the array.
-
+  if (values[pivotIndex] === value) {
+  return pivotIndex;
+} 
+else if (values[pivotIndex] > value) {
+  return binarySearch(values, start, pivotIndex - 1, value);
+} 
+else {
+  return binarySearch(values, pivotIndex + 1, end, value);
+}
   // TODO(you): Finish implementing this algorithm
 
   // If values[pivotIndex] is equal to value then return `pivotIndex`.