What is 60 increased
by 20%

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

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).

Round each decimal to the nearest hundredth