Answer:
7
Step-by-step explanation:
Answer: y=1.5x+5 slope 1.5
explanation: it the first two questions
In this big ol' word problem, this is just an instance of basic multiplication/division.
If it takes it 1 hour for 3 meters...
12 ÷ 3 = 4.
It would take 4 hours for the water level to change to 12 meters.