The weight of cell phones has been decreasing 20% each year since 1983. Based on this information, if a cell phone in 1983 weighed 2.5 pounds, how much would a phone weigh in 1984?​

Karl needs to build a stage that has an area of 72 square feet.the length of the stage should be longer than the width.what are the possible whole number measurements for the length and with of the stage complete the table with possible measurements of the stage

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

I’m really confused and need your assist me with this question i’ve never been taught