Q(3,5),R(3,1),S(-1,1),T(-1,5) Determine weather QRST is a rhombus, rectangle, or a square

Which value of c would make he following expression completely factored? 8x+cy

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

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row