Which of the following values "completes the square," or creates a perfect square trinomial, for x2 − 8x + 8 16 −8 −16

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?