9+10? c'mon guys you know it! (free points)

Simply 8x squared + 5(7x squared- x) - 2x =

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm