Lunch is $4 per person, even for the chaperones. There are 29 students and 6 chaperones are going on the field trip. Which expressions will determine the cost? Choose all that apply. 4 29 6 4 (26)(6) 4(29 6) 4(29) 4(6)

The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.