Geometry geometry geometry

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

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

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?