Can someone me with these questions plz

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Acircle has a circumference of 28.36 units what is the diameter of the circle