Cathy saves 4/5 of the money she earns from her part time job. how much does she saves when she earns 140

What statement is true? 2x^2-9x+2=-1

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

Having a hard time understanding this question (see attachment).