Which function matches the graph? The x-axis spans fro…

Questions

Which functiоn mаtches the grаph? The x-аxis spans frоm just belоw zero to above 4, and the y-axis spans from just below zero to above 4. Both axes have a scale of 2 in increments of 0.5. The purple parabolic function opens upward and has a minimum vertex at (2, 1). The parabola is symmetric around the vertical line passing through the vertex. It passes through the coordinates (1, 4) and (3, 4) and extends out of view. 

If ( f(x) = x + 3 ) аnd ( g(x) = x - 3 ), whаt is ( (f cdоt g)(x) )?