Speedy Delivery has a very lazy accountant. When originally setting up the delivery trucks into the accounting system, the accountant did not want to calculate the expected salvage value for each vehicle. He left salvage value at $0 even though this is not the case. Explain what leaving the salvage value at $0 would do for depreciation. Discuss the differences, if any, between straight-line, double-declining, and units-of-production methods due to leaving the salvage value at $0.

You wish to retire in 13 years, at which time you want to have accumulated enough money to receive an annual annuity of $23,000 for 18 years after retirement. during the period before retirement you can earn 9 percent annually, while after retirement you can earn 11 percent on your money. what annual contributions to the retirement fund will allow you to receive the $23,000 annuity? use appendix c and appendix d for an approximate answer, but calculate your final answer using the formula and financial calculator methods.