Juan had his car washed at the speedy clean car wash. He paid $20 for a car wash. He gave a 15% tip to the attendant who washed his car. What was the amount of the tip Juan paid? 1. $3.25
2. $3
3. $3.5

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.

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?