Rena wrote all the integers from 1 to 19. How many digits did she write?

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

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?