The height of a triangle is 4 less than its base. The area of the triangle is 30 square inches. Find the length of the base to the nearest inch.

4 in

6 in

8 in

10 in

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.