This is for a test plz help and hurry

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 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.

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?