I need help solving this general accounting question with the proper methodology.

Parker Manufacturing calculates its predetermined overhead rate annually based on direct labor-hours. At the beginning of the year, the company estimated that 40,000 direct labor-hours would be required for production. The estimated fixed manufacturing overhead was $720,000, and the estimated variable manufacturing overhead was $4.50 per direct labor- hour. What is the predetermined overhead rate per direct labor-hour? (Round your answer to two decimal places.)