diff --git a/src/file_utils/content_analysis.py b/src/file_utils/content_analysis.py
index e5497ce..ef7cc28 100644
--- a/src/file_utils/content_analysis.py
+++ b/src/file_utils/content_analysis.py
@@ -14,82 +14,51 @@
 def read_lines(file_path: str, encoding: str = 'utf-8') -> List[str]:
     """
     Read all lines from a file and return as a list.
-    
-    Args:
-        file_path (str): Path to the file to read
-        encoding (str): File encoding (default: 'utf-8')
-        
-    Returns:
-        List[str]: List of lines from the file (with newline characters preserved)
-        
-    TODO: Implement line-by-line file reading
     """
-    # TODO: Implement reading lines
-    pass
+    lines = []
+    with open(file_path, 'r', encoding=encoding) as file:
+        for line in file:
+            lines.append(line)
+    return lines
 
 
 def count_lines(file_path: str, encoding: str = 'utf-8') -> int:
     """
     Count the number of lines in a file.
-    
-    Args:
-        file_path (str): Path to the file
-        encoding (str): File encoding (default: 'utf-8')
-        
-    Returns:
-        int: Number of lines in the file
-        
-    Examples:
-        >>> count_lines('data.txt')
-        150
-    
-    TODO: Implement line counting
     """
-    # TODO: Implement line counting
-    pass
+    count = 0
+    with open(file_path, 'r', encoding=encoding) as file:
+        for line in file:
+            count += 1
+    return count
 
 
 def count_words(file_path: str, encoding: str = 'utf-8') -> int:
     """
     Count the number of words in a file.
-    
-    Args:
-        file_path (str): Path to the file
-        encoding (str): File encoding (default: 'utf-8')
-        
-    Returns:
-        int: Number of words in the file
-        
-    Examples:
-        >>> count_words('essay.txt')
-        500
-    
-    TODO: Implement word counting
-    Hint: Split the content by whitespace and count the resulting list
     """
-    # TODO: Implement word counting
-    pass
+    word_count = 0
+    with open(file_path, 'r', encoding=encoding) as file:
+        for line in file:
+            words = line.split()
+            word_count += len(words)
+    return word_count
 
 
 def find_in_file(file_path: str, search_term: str, case_sensitive: bool = True, encoding: str = 'utf-8') -> List[Tuple[int, str]]:
     """
     Find all occurrences of a search term in a file.
-    
-    Args:
-        file_path (str): Path to the file to search
-        search_term (str): Term to search for
-        case_sensitive (bool): Whether search should be case sensitive (default: True)
-        encoding (str): File encoding (default: 'utf-8')
-        
-    Returns:
-        List[Tuple[int, str]]: List of tuples containing (line_number, line_content)
-        
-    Examples:
-        >>> matches = find_in_file('log.txt', 'ERROR')
-        >>> print(matches)
-        [(15, 'ERROR: Connection failed'), (23, 'ERROR: Invalid input')]
-    
-    TODO: Implement text search in file
     """
-    # TODO: Implement file search
-    pass
\ No newline at end of file
+    results = []
+
+    with open(file_path, 'r', encoding=encoding) as file:
+        for line_number, line in enumerate(file, start=1):
+
+            if not case_sensitive:
+                if search_term.lower() in line.lower():
+                    results.append((line_number, line.strip()))
+            else:
+                if search_term in line:
+                    results.append((line_number, line.strip()))
+
+    return results
\ No newline at end of file