Rearrange the equation so u is the independent variable. -12u+13=8w-3 w=

I'm terrible at math any here is appreciated.

Which graph represents the following piecewise defined function?

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?