Phosphorus is an essential plant nutrient required to assure stable food supply of the global populace. There has been debate regarding the availability of mined phosphorus for future generations. Given that in 2019, the USGS reported that the economically extractable phosphate rock reserves worldwide were 63323359752 million tons, while world mining production in 2018 was 279822649 million tons per year. Calculate how long economically extractable phosphorus reserves would last (from 2019) if the 2018 demand remained constant (assume that there will be no technological development or to improve the economics of phosphorus extraction).

Overspeculation and a decrease in consumer confidence are both leading factors of: ?

Exercise 18-15 sheffield appliance center is an experienced home appliance dealer. sheffield appliance center also offers a number of services for the home appliances that it sells. assume that sheffield appliance center sells ovens on a standalone basis. sheffield appliance center also sells installation services and maintenance services for ovens. however, sheffield appliance center does not offer installation or maintenance services to customers who buy ovens from other vendors. pricing for ovens is as follows. oven only $790 oven with installation service 850 oven with maintenance services 970 oven with installation and maintenance services 990 in each instance in which maintenance services are provided, the maintenance service is separately priced within the arrangement at $180. additionally, the incremental amount charged by sheffield appliance center for installation approximates the amount charged by independent third parties. ovens are sold subject to a general right of return. if a customer purchases an oven with installation and/or maintenance services, in the event sheffield appliance center does not complete the service satisfactorily, the customer is only entitled to a refund of the portion of the fee that exceeds $790. assume that a customer purchases an oven with both installation and maintenance services for $990. (b) indicate the amount of revenue that should be allocated to the oven, the installation, and to the maintenance contract.

Kimberly has been jonah in preparing his personal income tax forms for a couple of years. jonah's boss recommended kimberly because she had done a good job setting up the company's new accounting system. jonah is very satisfied with kimberly's work and feels that the fees she charges are quite reasonable. kimberly would be classified as a(n) (a) independent auditor (b) private accountant (c) public accountant (d) accounting broker