The origin is the center of dilation what is the scale factor of the dilation

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]