Please help 3. Construct a function that models the pressure-altitude data. Create a plot that includes the model function and the data together. Explain how and why you chose your model function, including the values of any parameters.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.