Given f(x) = 2x + 3 and g(x) = x - 9, what is f(x) + g(x)? x - 6 3x - 12 3x - 6 x + 12

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|