What evidence for the transformation of energy does the running fan produce? Select all that apply. Light is produced. The fan warms up. Sparks can be seen. The blades of the fan are spinning. An air flow is felt.

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.

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

What is the upper quartile in the box plot?