What is the measure of angle x?

Which choice represents the sample space ,s for this event

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Here is my 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?