The entrance onto the track is at the point (0, 10) are just two local extreme values , a minimum at (4, 2) and the exit is at (15,0 ) . There and a maximum at (8, 8) . You do not have to consider designing the stairs leading to the entrance

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

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.

Can someone me out here number 4 plz