If a 648 N body on a carpeted surface has a μs of 0.86 and a μk of 0.68, what amount of force will be required to start dragging the body across the floor? Make sure to report your answer with the correct number of significant figures

am I doing this right?

648*.68=440

No.

To start it moving you must overcome the static friction. After that it gets easier.
648 * .86