What is the slope of the line that goes through the points (0, -3) and ( 7 -9)?

The solution set for 5v2 – 125 = 0 is

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.

How do i put 3(x+7) in distributive property