Probablility question 11 points please helpp meee yal

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

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

The function models the number of accidents per 50 million miles driven as a function