Betty's bakery sells donut holes at $2.00 for 5 boxes. shari's sweets sells 6 boxes of donut holes for $2.30. which store has the better buy?

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the ratio fraction form of 25: 9