Miley woke up late for school, so she had to rush to be on time. Once she was done getting dressed and everything, she grabbed her keys, and started driving. When she started driving it was 8:15 am. It usually takes her about 20 minutes to get to school, but because she woke up late and there's a lot of traffic it might take her longer. For the first 5 minutes, she had to go over the speed limit (60 mph). She went 80 mph. When she checked her phone to see what time it was, it was 8:20. She decreased her speed limit to 70 mph. Ten minutes later she checked the time again, and went at a constant speed 60mph. She arrived at school at 8:35. She got to class just on time.