diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..82b0e9a
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,4 @@
+language: python
+script: 
+  python -m unittest discover -s ./src/test/ -p '*_test.py'
+ 
diff --git a/src/main/calculator.py b/src/main/calculator.py
index b874a57..aa95dc3 100644
--- a/src/main/calculator.py
+++ b/src/main/calculator.py
@@ -1,13 +1,16 @@
 # Created by Leon Hunter at 9:54 AM 10/23/2020
 class Calculator(object):
     def add(self, a, b):
-        return None # TODO - Implement solution
+        return a + b
 
     def subtract(self, a, b):
-        return None # TODO - Implement solution
+        return a - b
 
     def multiply(self, a, b):
-        return None # TODO - Implement solution
+        return a * b
 
     def divide(self, a, b):
-        return None # TODO - Implement solution
+        if (b != 0):
+            return a / b
+        else:
+            return ZeroDivisionError
diff --git a/src/main/perscholas_rocks.py b/src/main/perscholas_rocks.py
index d36d3bd..8b719cc 100644
--- a/src/main/perscholas_rocks.py
+++ b/src/main/perscholas_rocks.py
@@ -1 +1 @@
-# print("Perscholas Rocks!") # TODO - Implement solution
\ No newline at end of file
+print("Perscholas Rocks!") # TODO - Implement solution
\ No newline at end of file
diff --git a/src/main/predicator.py b/src/main/predicator.py
index d0ca9bd..fa60e5e 100644
--- a/src/main/predicator.py
+++ b/src/main/predicator.py
@@ -1,13 +1,28 @@
 # Created by Leon Hunter at 3:56 PM 10/23/2020
 class Predicator(object):
     def is_greater_than_5(self, some_value):
-        return None # TODO - Implement solution
+        if (some_value > 5):
+            return True
+        else: 
+            return False
+        
 
     def is_greater_than_8(self, some_value):
-        return None # TODO - Implement solution
+        if (some_value > 8):
+            return True
+        else:
+            return False
+        
 
     def is_less_than_4(self, some_value):
-        return None # TODO - Implement solution
+        if (some_value < 4):
+            return True
+        else: 
+            return False
 
+    
     def is_less_than_1(self, some_value):
-        return None # TODO - Implement solution
\ No newline at end of file
+        if(some_value < 1):
+            return True
+        else: 
+            return False
\ No newline at end of file
diff --git a/src/main/string_evaluator.py b/src/main/string_evaluator.py
index 38b007a..b10793f 100644
--- a/src/main/string_evaluator.py
+++ b/src/main/string_evaluator.py
@@ -1,28 +1,29 @@
 # Created by Leon Hunter at 3:57 PM 10/23/2020
 class StringManipulator(object):
     def get_hello_world(self):
-        return None # TODO - Implement solution
+        return "Hello World"
 
     def concatenate(self, value_to_be_added_to, value_to_add):
-        return None # TODO - Implement solution
+        return value_to_be_added_to + value_to_add
 
     def substring_inclusive(self, string_to_fetch_from, starting_index, ending_index):
-        return None # TODO - Implement solution
+        return string_to_fetch_from[starting_index : ending_index]
 
     def substring_exclusive(self, string_to_fetch_from, starting_index, ending_index):
-        return None # TODO - Implement solution
+        return string_to_fetch_from[starting_index +1 : ending_index -1]
 
     def compare(self, first_value, second_value):
-        return None # TODO - Implement solution
+        return first_value == second_value
 
     def get_middle_character(self, string_to_fetch_from):
-        return None # TODO - Implement solution
+        middleIndex = len(string_to_fetch_from)/2
+        return string_to_fetch_from[middleIndex]
 
     def get_first_word(self, string_to_fetch_from):
-        return None # TODO - Implement solution
+        return string_to_fetch_from.split(" ")
 
     def get_second_word(self, string_to_fetch_from):
         return None # TODO - Implement solution
 
     def reverse(self, string_to_be_reversed):
-        return None # TODO - Implement solution
\ No newline at end of file
+        return string_to_be_reversed[::-1]
\ No newline at end of file