A rectangle has a perimeter of 42 inches. The width is 3 less than twice its length. Find the length and width. PLEASE ANSWER I NEED HELP!!
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He concluded that a heavier object dropped from the same height as a lighter object will land

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.

Which graph represents the parent function of y=(x+2)(x-2)