Use the sieve of eratosthenes to find all prime numbers from 51 to 100

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

How do i do this activity, is appreciated

41/17 as a decimal rounded to the nearest hundredth