In a group of 60 students, 12 students take algebra i, 18 students take algebra ii, and 8 students take both subjects. how many students don't take either of these subjects?

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)