Arect angular patio measures 20 feet by 30 feet. by adding x feet to the width and x feet to the length, the area is doubled. what r the new dimensions of the patio

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?