(sorry for login question pls help ) Fit Data to a line

When using empirical data ( data and information collected by scientists in an experiment ), sometimes, that data will not form a perfect line on a graph. when this happens, the line that is created using a linear regression is known as the " line of best fit " the following speed data was collected from a car moving with a constant acceleration.

1 - what is the line of best fit for this data? perform a linear regression on this table to find the equation .

2 - based on your equation, what was the car's approximate initial velocity (at time = 0) ?

3 - if the car continued at the same acceleration (meaning the slope of the line does not change), how fast would it be going in 15 seconds ?