so i have goodknews and bad knew my uncle got out of jail but he cant live with us anymore I'm so sad because he has been there for my whole life and now he's has to walk away from me

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2