Investment: Suppose that you and 3 friends bought equal shares of an investment for a total of $20,000 and then sold it later for only $19,600. How much did each person lose? Please help me

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.