What is the answer i’m trying to go up by today on khan academy and i’m on 45 and i need to get to 50 and i’m struggling there is a pic attached : )

The figure above shows the lengths of thesides of a rectangle in cm. find the valuesof x and y and then the area of the rectangle. sides: top= 3x - yleft= 3y + 4bottom= 2x + yright= 2x - 3 use both methods, elimination and substitution, if possible.

Select a graph that have an equation with a < 0

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.