Answer:
44,286
Step-by-step explanation:
The rule is multiplying by -3.
The sequence goes -3, 9, -27, 81, -243, 729, -2187, 6561, -19683, 59049
Add all of those up and you get 44,286

if you have already covered slopes, you could also get it that way, in fact is simpler that way.
You have to cut 15 pounds into 3.75 four times
The answer is 6hours in 122 minutes do umknow