do the following senarios model the equation y=2x+5

There are initially 5 chickens on the farm. Each month thereafter the number of chickens is 2 times the number in the month before. YES/NO?

Nina earns $2.00 for each Enjoy the City book she sells. Each time she sells a book she also gets a five-dollar tip. YES/NO?

The temperature at 8:00 AM is 5 degrees Celsius and increases 2 degrees per hour. YES/NO?