Tony is filling up his backyard pool. When he start filling up there was 120 gallons already. The water fills up at a rate of off 18 gallons per hours. a. Write a function that represents the number of gallons in the pool after x hours.

The graph shows the populations of two species in a particular region over two decades. based on the graph, what can you conclude about the relationship between the two species? a. the two species have a parasitic relationship. b. the two species are mutualistic in nature. c. the two species exhibit commensalism. d. the two species have a prey-predator relationship. e. the two species have a familial relationship.