Does anyone know the answer ?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

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)