help now on calculus show work need help asap

1. (10 points) Estimate the net area between f(x) = = and the x-axis from x = 1 to a = 5 using four approximationg rectangles and right endpoints. Round your answer to three decimal places, 2. (6 points) Calculate the following derivative: dx Vcost + 12 dt 3. (10 points) Find y if y' = 3x2 + 2x + 1 and y(0) = 3