Alexander has some dimes and some quarters. she has no more than 21 coins worth a minimum of $3.75 combined. if alexandra has 4 dimes, determine the minimum number of quarters that she could have.

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.