A 10 foot by 20 foot rectangular rug is hung outside to dry. Near the center of the rug, is a circle of radius 4 feet. What is the probability that a fly randomly lands inside the circle?
Please answer as a simplified fraction or as a decimal rounded to four places.

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?