please show all work and formulas used

Developing and Using a Predetermined Overhead Rate Assume that the following predictions were made for 2009 for one of the plants of Milliken \& Company: Actual results for February 2009 were as follows: (a) Determine the 2009 predetermined overhead rate per machine hour. $ (b) Using the predetermined overhead rate per machine hour, determine the manufacturing overhead applied to Work-in-Process during February. $ (c) As of February 1, actual overhead was underapplied by $500,000. Determine the cumulative amount of any overapplied or underapplied overhead at the end of February. $