Does a real-world market have to meet all the assumptions of the theory of perfect competition before it is considered a perfectly competitive market?

Which of the following would cause a shift to the right of the supply curve for gasoline? i. a large increase in the price of public transportation. ii. a large decrease in the price of automobiles. iii. a large reduction in the costs of producing gasoline

Rare beef roasts can be cooked to what internal temperature? a) 120°f b) 130°f c) 145°f d) 155°f

If airlines do not change their prices how else might they try to compete with each other?