In which situation . short-cut method of continuous series is used to find simple arithmetic mean?​

Ahospital purchases a $500,000 magnetic resonance imaging (mri) machine that has a useful life of 9 years. the salvage value at the end of 9 years is $77,000. (a) write a linear equation that describes the value y (in dollars) of the mri machine in terms of the time t (in years), 0 ≤ t ≤ 9. (b) find the value, in dollars, of the machine after 6 years. $ (c) find the time, in years, when the value of the equipment will be $140,000. (round your answer to two decimal places.) yr

Which career pathways require workers to train at special academies? a.emts and emergency dispatchers b.crossing guards and lifeguards c.police officers and firefighters d.lawyers and judges

What level of measurement (nominal, ordinal, interval, ratio) is appropriate for the movie rating system that you see in tv guide?