Answer:
not completely sure but I think it's it's 13.4
1. y=2x^2-8X-1
2. y=-6x^2+36x-63
3. y=-3x^2+18x-34
4. y=9x^2+54x+76
5. y=-x^2+8x-22
6. y=6x^2-48x+90
7. y=8x^2+16x+5
8. y=2x^2-8x+1
Have a great day :)
