You brake your car from a speed of 55 mph. The table shows data that represent your car's speed versus the amount of time elapsed from the moment that you began to brake. Elapsed Time (seconds) Speed (mph) 1 47 2 39 3 31 4 23 5 23 6 23 Evaluate the following graph based on the data in the table. For what interval of time is the speed increasing? For what interval of time is the speed decreasing? For what interval of time is the speed constant?