Please help with my Algebra 1-5

What is the percent of increase for a population that changed from 438,000 to 561,000

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

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)