What are the values of e and a1 for ... ?

r=1/5; a1=3
r=1/3; a1=3
r= 5; a1= 1/3
r= 5; a1= 5

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

The heaviest 16% of all men in weight weigh more than how many pounds ?

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