I'm confused! given: f(x) = x 2 + 2x + 1, find f(x + h) and simplify. is that the derivative formula? what should i do?

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)

What is the approximate circumference of the circle shown below?

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation