A star sits at the top of a 27 foot tall Christmas tree. The star is seen by a child who is standing 11 feet away from
the tree.
To the nearest degree, what is the angle of elevation from
the child to the star?

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

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.

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.