Aplumber charges $50 to make a house call. he also charges $25 per hour for labor. write an equation that represents x, the number of hours for labor.

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?