The proportional relationships between heartbeats, h , and the time in seconds, s . Which equation represents the relationship between heartbeats and time? (let's see how well u answer this)

A
h=23s

B
h=32s

C
h=6s

D
h=32

What are the domain and range of the function? f(x) = -4 (sqrt)x

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 answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)