1. Evaluate each integral 2 (x + 1)2 i. - dx 71/ 4 ii. sec 0 tan 0 - sin e de 71 /6 iii. 2. Pebbles the cat meows more loudly the higher she climbs in her favorite tree. Her volume changes at a rate of h h2 v(h) = 20 3600 decibels per foot, where h is Pebbles' height above ground measured in feet. Find the change in Pebbles' volume as she climbs from 10 feet up on the tree to 20 feet up in the tree. 3. On a typical day, a city consumes water at the rate of r(t) = 100 + 72t - 3t2 gallons per hour, where t is the number of hours past midnight. How much water is consumed between 6 A.M. and 9 A.M