Cari owns a horse farm and a horse trailer than can transport up to 8000 pounds of livestock and tack. She travels with 5 horses whose combined weight is 6240 pounds. let t represent the average weight of tack per horse. which of the following inequalities could be used to determine the weight of tack Cari can allow for each horse?
1. 6240+t≤8000
2. 8000≥6240t
3. 6240+5t≤8000
4. 8000+6240≤5t
5. 8000-6240≤5t