Answer:
B
Step-by-step explanation:
the first fish tank has 100 gallons of water and 1 gallon is removed every hour which makes 100-h
the second tank has 40 gallons in it and 2 gallons are added every hour which makes 40+2h
after 20 hours the second tank will have more gallons than the first tank
this means that 40+2h would be greater than 100-h since it's also asking you "After how many hours will the first tank have less water than the second?"
Adding 2x to both sides we get
y = 2x
This is direct variation where the constant is 2.
Answer:
negtive 1
Step-by-step explanation:
180
180- 40=140
140 / 2= 70
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