Modeling with Rational Functions Answers

Which rational function models the time, y, in hours, that it takes the train to travel between the two cities at an average speed of x miles per hour? y = x/6.4y = x/160y = 6.4/x✔ y = 160/x

What does the number 160 represent in the rational function that models the situation?

If the volume of the gas increases from 600 to 800 in.3, by how much does the pressure change?

On average, how much more is the total cost of owning a cat for 10 years than owning a small dog for 10 years? $