4x-2y=-12
4x+8y=-24
someone me solve systems of equations by elimination !

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?