A retail store is having a back to school sale on chrome books. At 10 am the store has sold 8 chrome books. At 7 pm the store discovers that it has sold 32 chrome books. What is the average rate of change between 10 am and 7pm

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)