You and two of your friends go to the movies. each ticket cost $7.50. you share the cost of the popcorn. if each person pays $9.05, how much was the popcorn?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve