A single conservative force acts on a 4.50 kg particle within a system due to its interaction with rest of the system. The equation F_x = 2x + 4 describes the force, where F_x is in newtons and x is in meters. As the particle moves along the x axis from x = 0.92 m to x = 6.75 m, calculate kinetic energy the particle has at x = 6.75 m if its speed is 3.00 m/s at x = 0.92 m.