Mike decides to buy a new camera.  He wants to buy a top-of-the-line camera but he decides to wait for the new model to come out.  The new model costs 30% more than the current model.  The old camera cost $4000.  He gets $200 off a $400 lens he bought.  How much did he pay for the camera and lens?
The new camera cost 4000*.3=$<T>multiply(4000, 0.3)=1200.0 more than the old camera.
So the camera cost 4000+1200=$<T>add(4000, 1200)=5200
The lens cost 400-200=$<T>subtract(400, 200)=200
So the total cost was 5200+200=$<T>add(5200, 200)=5400
