Which of the following is an example of accrued revenue?

(a) snow removal services that have been provided but have not been billed or paid
(b) snow removal services that has been provided and paid on the same day
(c) an agreement that has been signed for snow removal services for the next three months
(d) snow removal services that have been paid for three months in advance

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