Rachel has $21.63 for a cab ride. There is an initial fee of $1.68 with a $0.29 charge for every mile traveled. This situation is modeled by the equation 0.29m + 1.68 = 21.63, where m represents the number of miles traveled.

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.

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

Twelve less than a number is at most 20