write the following using algebraic notation, using the letter x for any unknown numbers: I think of a number, subtract four then divide by three

Which of these tables represents a non-linear function?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?