Vivian wants to buy a watermelon. Kingston's Market has 10- pound watermelons for $3.90, but the Farmer's Market has 12-
pound watermelons for $4.44.
What is the cost per pound for the 10 pound watermelons?

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).