Oil is being pumped into a tank over a 12-hour period. The tank contains 200 gallons of oil when t=0 hours. The rate at which oil is flowing into the tank at various times is modeled by a differentiable function R for 0 ≤ t $ 12, where t is measured in hours and R(t) is measured in gallons per hour. Estimate the number of gallons in the tank after 12 hours, using a midpoint Riemann Sum with 2 subintervals. (Express your answer using units!)
