20. What is the perimeter of a square that has a side length of 4x - 5y? (Show Work)

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse