(15 points) On January 1, 2015, Boston Company purchased a heavy duty machine having an invoice price of $13,000. Boston paid transportation and installation costs totaling $3,000. The machine is estimated to have a 4-year useful life and a $1,400 residual value. Calculate depreciation expense and book value for 2015-2018, assuming double declining-balance method of depreciation.

Email viruses are typically launched by people who modify header information to hide their identity. brightmail's enrique salem says that in the future, your email reader will authenticate the sender before putting hte message in your inbox. that way, you will know the source of all the emails you read. alan nugent of novell says, "i'm kind of a fan of eliminating anonymity if that is the price for security." will eliminating anonymity make computers more secure?

Suppose jamal purchases a pair of running shoes online for $60. if his state has a sales tax on clothing of 6 percent, how much is he required to pay in state sales tax?

Marketing1. suppose the average price for a new disposable cell phone is $20, and the total market potential for that product is $4 million. topco, inc. has a planned market share of 10 percent. how many phones does topco have the potential to sell in this market? 20,0002. use the data from question 3 to calculate topco, inc.'s planned market share in dollars. $400,0003. atlantic car rental charges $29.95 per day to rent a mid-size automobile. pacific car rental, atlantic's main competitor, just reduced prices on all its car rentals. in response, atlantic reduced its prices by 5 percent. now how much does it cost to rent a mid-size automobile from atlantic? $28.45