What is another equivalent expression for 4(5 + x)

Simplify. 3(4+4x) (type your answer in with no spaces)

Iknow the answer but the calculator doesn't seem to give the right one

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)