Name 50 digits of pi no calculators but use pencils and paper

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

Describe what moves you could use to create the transformation of the original image shown at right

Which geometric principle is used to justify the construction below?