Which of the following observations is true?
a. fixed costs can be completely varied if the time period is sufficient.
b. fixed costs arise when some types of inputs can be bought only in big batches.
c. variable costs arise when inputs have a large productive capacity.
d. in the long run, more costs become variable.

Using a cps-sample of 7,440 individuals, you estimate the following regression: = 20.91 - 2.61 x female where female is a binary variable that takes on the value of 1 for females and is 0 otherwise. the standard error on the coefficient on female is 0.25. the 95% confidence interval for the gender wage gap, or the amount that females earn less, is: a) [-3.10, -2.12] b) [18.30, 23.52] c) [-3.02, -2.20] d) [-1.96, -1.64]

In early january, burger mania acquired 100% of the common stock of the crispy taco restaurant chain. the purchase price allocation included the following items: $4 million, patent; $3 million, trademark considered to have an indefinite useful life; and $5 million, goodwill. burger mania's policy is to amortize intangible assets with finite useful lives using the straight-line method, no residual value, and a five-year service life. what is the total amount of amortization expense that would appear in burger mania's income statement for the first year ended december 31 related to these items?

Jaynet spends $50,000 per year on painting supplies and storage space. she recently received two job offers from a famous marketing firm – one offer was for $95,000 per year, and the other was for $120,000. however, she turned both jobs down to continue a painting career. if jaynet sells 35 paintings per year at a price of $6,000 each: a. what are her accounting profits? b. what are her economic profits?