The parabola y=-x^2+12x-11 has an axis of symmetry of x=6. which of the following represents its range? 1) y>-11
2)y<25
3)y<6
4)y>10

(all of the ">/<" are underlined ones)

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible