Pls explain step by step and pls yell by are adding dividing multiplying etc

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

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?