Complete this item Simplify (39 x^5 z^4)^0 • 18 x^2 y

If it helps in the drag and drop box it says
_ _ _ _ y _ _ _ _ _

Find the value of the variable and the length of each secant segment.

Is there an x intercept in the equation 60*1.15^x

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).