Asingle tree produces about 2.6 × 10² pounds of oxygen each year. the amazon rainforest has about 3.9×1011 trees. about how many pounds of oxygen are produced in the amazon rainforest per day? enter your answer in the box. 2.8 × 10 pounds per day

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.