Please help me with this ive been struggling on it for a while

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

Each day jake donates money to the global.

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.