Create a third and fourth degree polynomial of the form p(x)=ax^3and p(x)=ax^4. Choose a to be any number from 2 to 9, and evaluate its values for the following values of x: -20,-15,-10,10,15,20. What do you observe?

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.

A+b= 17, ab=70, find the value of |a-b|

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