Find an expression for x in terms of t

Reference no: EM13206131

Initially, the depth of water in a tank is 32m . Water drains from the tank through a hole cut in the bottom. At t minutes the water begins drainning, the depth of water in the tank is x metres. The water level changes at a rate equal to (-2t-4).

a) Find an expression for x in terms of t.

b) Hence, determine how long it takes for to completely drain from the tank.

Reference no: EM13206131

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