Jennifer works at a bookstore. She earns an hourly wage plus 4% commission on her monthly sales. Her total earnings for June, July, and August are shown. In June she earned $ 1,005. In July she earned $884 and in August she earned $936. Jennifer worked 60 hours in June, and her total sales were $8,625. Find the amount she earned from commission in June and the hourly wage she is paid.