When you have this equation you multiply both sides by 5. then you will get 9-x=15 and then i subtracted 9 to both sides . my answer is 6. what did i do wrong? 9-x/5=3

On a architect's drawing of a house, 1 inche representa 1.5

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.

In which form is the following function written? y = - 2(x – 3)(x + 5)