8 years because its uses 100l per load and you wash 100 per year you multiply and get 10,000 which divided by 1,00 its 10 so 10 x 5 = 50 so you save 50 per year and its 400 dollars more so 50 x 8 years will be 400
Answer:
48
Step-by-step explanation:
All you got to do is add all of them together
Answer:
(1,1)? Sorry im not completely sure








There are two critical points, at which we have

