A rock breaks loose from a cliff and plunges towards the ground 400 feet below. The distance 'd' that the rock falls in 't' seconds is given by the equation d=16t^2 (d equals 16 t squared). How long does it take the rock to hit the ground? (Show all work)

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Mathematics

16 April, 23:00

A rock breaks loose from a cliff and plunges towards the ground 400 feet below. The distance 'd' that the rock falls in 't' seconds is given by the equation d=16t^2 (d equals 16 t squared). How long does it take the rock to hit the ground? (Show all work)

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Skunk · Answer 1

You are the treasurer for a local charity. At the beginning of the month the balance was $820.64. The charity received donations of $500.00, $55.00 and $25.00. You have an electric bill of $40.64, bill for postage of $12.75, and rent for $445.00.