Alan is 14 years old. he is twice as old as his brother james. how old is james?

Which statement best describes the polynomial

What is the domain of the step function f(x)=[2x]-1?

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).