What is the value of 9^-1/2

What is the inverse of the function f(x) = 2x + 1?

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?

In the 30-60-90 triangle below side s has a length of and side r has a length