Not sure how to do this, could use some help. : )

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

In the 30-60-90 triangle below side s has a length of and side r has a length

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