Your boss would like you to estimate the fixed and variable components of a particular cost. Actual data for this cost over four recent periods appear below. Activity Cost Period 1 31 $ 385 Period 2 30 $ 374 Period 3 27 $ 356 Period 4 32 $ 400 Using the least-squares regression method, what is the cost formula for this cost?

What does the consumer price index measure? a. the change in prices of all goods and services over time b. the change in prices of specific goods and services over time c. the change in prices of final goods and services over time

Eileen's elegant earrings produces pairs of earrings for its mail order catalogue business. each pair is shipped in a separate box. she rents a small room for $150 a week in the downtown business district that serves as her factory. she can hire workers for $275 a week. there are no implicit costs. what is the marginal product of the second worker?

Bill dukes has $100,000 invested in a 2-stock portfolio. $62,500 is invested in stock x and the remainder is invested in stock y. x's beta is 1.50 and y's beta is 0.70. what is the portfolio's beta? do not round your intermediate calculations. round the final answer to 2 decimal places.