F (x)=-2x-3 g(x)=3x2-3x

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

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?