Answer:
The correct option is C.
Step-by-step explanation:
The general form of linear regression equation is
.... (1)
where,


Using the graphing calculator, we get


Substitute the values of a and b in equation (1).

The equation of line of best fit is y=0.0142857+2.01071x, where x is number of years and y is height of trees.
Substitute x=22 to find the height of trees after 22 years.



The height of trees after 22 years is 44.25 ft. Therefore the correct option is C.