Power sequence (2.5 points)
===========================

Write the function :py:func:`growth` that takes a base number ``b`` (:py:class:`int`) and a total ``t`` (:py:class:`float`) and returns the sum of the first powers of ``b`` (beginning with :math:`b^1`) that are less than or equal to the *5%* of ``t``. 

Save this function to file ``p3.py``.

Examples:

.. literalinclude:: test-sequence.txt
      :language: python
      :lines: 3-10

.. note::

   These tests are provided in file :download:`test-sequence.txt`.