101 While marching, a drum major tosses a baton 11) The height h (In feet) of a volleyball t seconds Into the air and catches it. The height h (in feel) of after it is hil can be modeled by the baton after + seconds can be modeled by h=-1612 +48/+4. Find the maximum height of h=-1612 +321 +6. Find the maximum height of the volleyball by completing the square. the baton by completing the square. 12) A store sells about 40 video game systems each month when it charges $200 per system. For each $10 Increase In price, about 1 less system is sold. As we know, the store's revenue can be modeled by R(x) = (200+10x) (40-x) . a) Rewrite this function In vertex form. b) What should the store charge to maximize revenue? c) How many game systems would be sold to maximize revenue in this model? d) What is the maximum revenue? For problems 13 - 15, complete the square to help write in standard form and find the center and radius of the circle. 13) x3 + y2 -14x +4y -11=0 14) x2 + y? - 3x+12y- Standard Form: Standard Form: Center: Center: r = 15) x2 + y?+16x-By+16=0