What is 14-6 step 1 and step 2

Solve the system of equations. y= 2x y= x^2 - 15

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.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?