What Is the slope of the line on the graph?

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Which value would be a solution for x in the inequality 47-4x< 7