Question 8(Multiple Choice Worth 10 points) (08.09 MC) Let f be a function with the derivative given by f.(x) = vx2 + 2. Which of the following integrals gives the length of the graph of y = f(x) from x = 0 to x = 1? x2 + 2dx O bv 1 + ( Vx 2 + 2) dx of Vx2 + 2 dx Of v x 2 + 3 dx Question 9(Multiple Choice Worth 10 points) (08.07 MC) What is the volume of the solid generated when the region bounded by the graphs of " and y = _x is revolved about the y-axis? 2437 O 1792n 162x Question 10(Multiple Choice Worth 10 points) (08.02 LC) The amount of water in a kiddie pool at noon is 25 gallons. Over the next 12 hours, the amount of water changes at a rate modeled by the differentiable function P, where P(t) is measured in gallons per hour and time t is measured in hours since noon. Which of the following is the best interpretation of Jo P(t) dt? The amount of water in the pool, in gallons, at 6 p.m. The average amount of water in the pool, in gallons, between noon and 6 p.m. The rate at which the amount of water is changing, in gallons per hour, at 6 p.m. The change in the amount of water in the pool, in gallons, between noon and 6 p.m