diff --git a/mathplug/mathplug.py b/mathplug/mathplug.py
index c4c82cf..eadacb4 100644
--- a/mathplug/mathplug.py
+++ b/mathplug/mathplug.py
@@ -1,3 +1,13 @@
+# absolute
+def absolute(arg):
+    """Returns the absolute value of the argument."""
+    result = 0
+    if arg < 1:
+        result = (arg * -1)
+    else: result = arg
+    return result
+
+
 # addition
 def add(*arg):
     """Returns sum of numbers passed in."""
@@ -7,6 +17,12 @@ def add(*arg):
     return total
 
 
+# cube
+def cube(arg):
+    """Returns the argument multiplied by itself, multiplied by itself again."""
+    return arg * arg * arg
+
+
 # division
 def divide(*arg):
     """Returns result of division of other arguments on first argument."""
@@ -21,6 +37,21 @@ def divide(*arg):
     return result
 
 
+# exponent
+def exponent(number, exponent):
+    """Returns the first argument raised to the second argument."""
+    result = number
+    if exponent == 0:
+        result = number
+    elif exponent >= 1:
+        for i in range(exponent - 1):
+            result *= number
+            print(result)
+    else:
+        raise AssertionError("Exponent is invalid.")
+    return result
+
+
 # Hello, World!
 def hello_world(name=None):
     """Greets the caller."""
@@ -61,4 +92,9 @@ def subtract(*arg):
     subtractor = 0
     for n in arg:
         subtractor += n
-    return (arg[0] - (subtractor-arg[0]))
\ No newline at end of file
+    return (arg[0] - (subtractor-arg[0]))
+
+
+# new function test
+# def test():
+    # assert exponent(1, 4) == 1
\ No newline at end of file
diff --git a/mathplug/test_mathplug.py b/mathplug/test_mathplug.py
index e1b4106..b7466e9 100644
--- a/mathplug/test_mathplug.py
+++ b/mathplug/test_mathplug.py
@@ -1,7 +1,21 @@
-# import module
+# module import
 from mathplug import mathplug as t
 
 
+# absolute()
+def test_absolute():
+    assert t.absolute(45) == 45
+
+def test_absolute_zero():
+    assert t.absolute(0) == 0
+
+def test_absolute_negative():
+    assert t.absolute(-6) == 6
+
+def test_absolute_wrong():
+    assert t.absolute(20) != 10
+
+
 # add()
 def test_add():
     assert t.add(10, 20) == 30
@@ -13,6 +27,17 @@ def test_add_wrong():
     assert t.add(30, 50) != 70
 
 
+# cube()
+def test_cube():
+    assert t.cube(5) == 125
+
+def test_cube_negative():
+    assert t.cube(-3) == -27
+
+def test_cube_wrong():
+    assert t.cube(7) != 21
+
+
 # divide()
 def test_divide():
     assert t.divide(10, 20) == 2
@@ -24,6 +49,20 @@ def test_divide_wrong():
     assert t.divide(30, 60) != 3
 
 
+# exponent()
+def test_exponent():
+    assert t.exponent(3, 2) == 9
+
+def test_exponent():
+    assert t.exponent(5, 0) == 5
+
+def test_exponent_negative():
+    assert t.exponent(-4, 3) == -64
+
+def test_exponent_wrong():
+    assert t.exponent(10, 3) != 30
+
+
 # hello_world()
 def test_hello_world():
     assert t.hello_world() == "Hello, World!"