How far will the rock have fallen in 6 seconds, 7 seconds? And write an equation for the function, with d representing the distance dropped after t seconds

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.