Brian took out a 20-month (1.67 years)loan for $2,500 at an annual intrest rate of 10%.Andy took out a two-year loan for $3,200 an an annual intrest rate of 8%.Who paid more in intrest, and how much more did he pay

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?