Help! Me with this question

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?

Mila's dog weighs 4 pounds more than 8 times the weight of keiko's dog. which expression could be used to fine te weight of mila's dog?

Three runners competed in a race data were collected at each mile mark for each runner if the runner ran at a constant pace the data would be linear