A steady stream of water flows

into a partially-filled rectangular tank.

After 6 minutes, there are 87 gallons of

water in the tank. After 21 minutes,

there are 222 gallons. Write an equation

to represent the volume of water in the

tank y after x minutes. How much water

was in the tank to begin?

into a partially-filled rectangular tank.

After 6 minutes, there are 87 gallons of

water in the tank. After 21 minutes,

there are 222 gallons. Write an equation

to represent the volume of water in the

tank y after x minutes. How much water

was in the tank to begin?

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