Nan attempt to save money, the lunchroom staff sent out student questionnaires to see which foods students preferred. once they knew students preferences, the lunch room staff would prepare the most popular foods, thereby reducing waste. based on the student questionnaire data, what inference can the lunchroom staff make? a) most students bring their lunch from home. b) pizza is the favorite food of about one-third the students. c) all students would prefer to eat pizza over any other food. d) students have no preferences regarding the food they eat for lunch.

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?