What is the sum of the first eight terms of a geometric series whose first term is 3 and whose common ratio is 1/2?

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

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 type of graph would allow us to compare the median number of teeth for mammals and reptiles easily