I think 0 represents the ground.
Hi
(6-d)(d²-5+3d) = 6d²-30+18d-d³+5d-3d² = -d³+6d²-3d²+18d+5d-30
(6-d)(d²-5+3d) = -d³+3d²+23d-30
Answer: -d³+3d²+23d-30
2 packets of biscuits and 3 packets of eggs. Hope this helps x

The graph will be a shaded region to the right of the solid vertical line x =8