BT&T Corporation manufactures telephones. Recently, the company produced a batch of 600 defective telephones at a cost of $9,000. BT&T can sell these telephones as scrap for $9 each. It can also rework the entire batch at a cost of $6,500, after which the telephones could be sold for $20 per unit. If BT&T reworks the defective telephones, by how much will its operating income change? Increase by $500. Decrease by $1,600. Increase by $5,500. Decrease by $6,500.

Amachine purchased three years ago for $720,000 has a current book value using straight-line depreciation of $400,000: its operating expenses are $60,000 per year. a replacement machine would cost $480,000, have a useful life of nine years, and would require $26,000 per year in operating expenses. it has an expected salvage value of $130,000 after nine years. the current disposal value of the old machine is $170,000: if it is kept 9 more years, its residual value would be $20,000. calculate the total costs in keeping the old machine and purchase a new machine. should the old machine be replaced?

The last time he flew jet value air, juan's plane developed a fuel leak and had to make an 4) emergency landing. the time before that, his plane was grounded because of an electrical problem. juan is sure his current trip will be fraught with problems and he will once again be delayed. this is an example of the bias a) confirmation b) availability c) selective perception d) randomness

You were able to purchase two tickets to an upcoming concert for $100 apiece when the concert was first announced three months ago. recently, you saw that stubhub was listing similar seats for $225 apiece. what does it cost you to attend the concert?