Step-by-step explanation:

Answer:
1/6
Step-by-step explanation:
14/84 = 7/42 = 1/6
Answer:
Millimeters per hour.
Step-by-step explanation:
Since its a water sprinkler, you would know that it doesn't cover miles of land, nor is it a food, so it isn't grams. Meters would seem like the right answer, but if you calculate meters to millimeters, you would see that meters are not covered in seconds. So the correct answer is millimeters per hour.
So each month you have to pay 750 - 900
= -150
each month have to pay $150.
then 5400 divided by 150, so I think the answer should be 36 months.