Can someone help please .

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)