a triangle has sides with lengths of 2x - 7 , 5x - 3, and 2x - 2. what is the perimeter of the triangle

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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?