How would i anser this select all the ratios equivalent to 4: 6

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation