Can anyone help me solve these problems?I asked all my friends for help but they all just leave me on delivered.

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?

Which statement best describes the polynomial

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9