Which pairs of triangles appear to be congruent to any others shown here?

What is the simplified expression for 6(2(y+x))

What is the equation of the graph below? y=sec(x)-4

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