Pls help me find the reason in the missing box :(

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

Solve for x. −3/4(x+2)=6 enter your answer in the box