What is the magnitude and direction (right or left) of the
net force acting on the box?
top: fn=12n. left: ff=3n. right: fp=15n. bottom: fg=12n

12 N to the right

Explanation:

If we calculate the net force acting on the box, we will have:

In y-component:

(1)

Where is the Normal force, directed upwards and is the weight of the box (gravity force), directed downwards.

(2)

(3) Hence the net force in the vertical component is zero

In x-component:

(4)

Where and

(5)

(6) This is the net force in the horizontal component

Therefore, the total net force acting on the box is 12 N directed to the right

i would say

well clustered together.

points close on a scatter diagram