PLS HELP

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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?

Item 1 solve for s. s+24=90 −114 −66 66 114