Question

A 3 kg object initially at rest is acted on by a non-constant force which causes it to move 3 m. The force varies with position as shown in the figure.
a) How much work is done on the object by this force?
b) What is the final speed of the object as it arrives at x=3m? Assume that the given force is the only force acting on the mass.

Equation and then plug the numbers into that equation and show the answer at the end
I still need help!!

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