Aclock struck 4 o'clock. in exactly how many minutes will the two hands first be at right angles?

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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