Javier and Brianna both have summer jobs working at Honeybee Ice Cream. Javier makes $15 per hour, and he has already earned a total of $270 this summer. Brianna is starting today, and she will be making $18 per hour as a new manager. Javier and Brianna work the same schedule.

Which equation can you use to find h, the number of hours of work it will take for Brianna and Javier to have earned the same amount of money?