For each problem, you need to state the angle relationship. Then give information regarding the relationship may someone help me on this

Mary had at least an 80% on her test write an inequality to represent this situation

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?

Use set builder notation to represent the following set: { -3, -2, -1, 0}