Given is the midpoint of DF , DE = 1-4x, and EF= 2x+13, find the length of segment EF

For what values of b will f(x)= logbx be a decreasing function? (16 )

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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