I am not entirely sure what your asking but i think you mean which will coast the least and that would be 8 since it’s the smallest amount
Answer:
I think its linear so I dont know 100% but I think it's a sorry if I'm wrong
Answer:
38174:54*3*0.40
Step-by-step explanation:
1. calculate how much per week by
38174:54
2. than in 3 weeks
38174:54*3
3. than 40 percent of that
x*0.40
