Which relation is a function? a. x −2 0 0 2 4 y 4 3 4 4 6 b. x 3 5 7 10 14 y 9 6 9 2 3 c. x −3 2 2 4 6 y 2 1 8 5 3 d. x −6 −1 1 1 6 y 0 6 2 −3 4

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.