Sasha needs an average of 30 points to move to the next level in her competion . her scores in the first three events are 28, 35, and 30. what is the lowest score she can score?

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?