Can you please show me how you do this problem im having trouble with it thanks!

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

Which of the following is the graph of y= square root -x-3

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?