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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def send_to_address(recipient_address, amount, private_key, blockchain_client=BlockchainInfoClient(), fee=STANDARD_FEE, change_address=None):
 """ Builds, signs, and dispatches a "send to address" transaction. """

    # build and sign the tx
    signed_tx = make_send_to_address_tx(recipient_address, amount,
        private_key, blockchain_client, fee=fee,
        change_address=change_address)
    # dispatch the signed transction to the network
    response = broadcast_transaction(signed_tx, blockchain_client)
    # return the response
    return response