Which table shows a function that is decreasing only over the interval (–1, ∞)?

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

Which number line correctly shows 0.8 + 0.3?

When is g(x) = 0 for the function g(x) = 5.23x + 4?