Billy's dogs wouldn't stay in his yard, so his parents decided to build a rectangular fence to keep them in 15 2/3 feet long and 20 1/2 feet
wide. What is the perimeter of the fence?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?