What is the value of x?

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The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?

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).