Find the domain and range (i really want to see the range)

y= x/x^2-4

The diagonals of a rhombus are 12 inch and 16 inch long, the length of a side of a rhombus is 10 inch, what is the height of the rhombus

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

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?