Depreciation Problem: The Internal Revenue Service (IRS) assumes that an item that can wear out, such as a house, car, or computer, depreciates by a constant number of dollars per year. (If the item is used in a business, the owner is allowed to subtract the amount of the depreciation from the businesss income before figuring taxes.) Suppose that an office building is originally valued at $1,300,000. a. If the building depreciates by $32,500 per year, write the first few terms of the sequence of values of the building after 1, 2, 3, . . . years. What kind of sequence do these numbers follow? How much will the building be worth after 30 years? How long will it be until the building is fully depreciated? Why does the IRS call this straight-line depreciation? b. Suppose that the IRS allows the business to take accelerated depreciation, each year deducting 10% of the buildings value at the beginning of the year. Write the first few terms in the sequence of values in each year of its life. How much will the business get to deduct the first, second, and third years of the buildings life? How old will the building be when the business gets to deduct less than $32,500, which is the amount using straight-line depreciation?

EXPERIMENTS ● Non-experimental method = do not involve manipulation of an independent research ○ Descriptive research = describes how people think, feel, and behave ● Correlational research = assess whether two measured variables are related to one another ○ Ex. happiness is positively associated with work productivity ○ Provides clues for carrying out experiments that examine possible causal effects ● The researcher designs participants to conditions and manipulates at least one independent variable ● Vary as least one independent variable to assess its effects on participants’ responses Independent Variable ● Thought to influence or cause the behavior ● Has levels ○ Conditions, groups, or categories wi