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TIME REMAINING

24:31

Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.

2x + y + 4z - 16

5x - 2y + 22 -1

. + 2y – 32--9

a. (-1, 2, 22)

C (-1, 2,4)

b. (-10, 22, 42)

d. (-10, 2, 22

Please select the best answer from the choices provided

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Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).