Multiply terms with the same bases and exponents

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

What is 6/10 rounded to the nearest half

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).