NoFly Corporation sells three different models of a mosquito "zapper." Model A12 sells for $53 and has variable costs of $45. Model B22 sells for $101 and has variable costs of $81. Model C124 sells for $406 and has variable costs of $315. The sales mix of the three models is A12, 59%; B22, 27%; and C124, 14%. What is the weighted-average unit contribution margin? (Round answer to 2 decimal places, e. g. 15.50.) Weighted-Average Unit Contribution Margin $ .

An office manager is concerned with declining productivity. despite the fact that she regularly monitors her clerical staff four times each day—at 9: 00 am, 11: 00 am, 1: 00 pm, and again at 3: 00 pm—office productivity has declined 30 percent since she assumed the helm one year ago. would you recommend that the office manager invest more time monitoring the productivity of her clerical staff? explain.

Companies in the u.s. car rental market vary greatly in terms of the size of the fleet, the number of locations, and annual revenue. in 2011 hertz had 320,000 cars in service and annual revenue of approximately $4.2 billion. the following data show the number of cars in service (1000s) and the annual revenue ($ millions) for six smaller car rental companies (auto rental news website, august 7, 2012). excel file: data14-09.xls if required, enter negative values as negative numbers. a. select a scatter diagram with the number of cars in service as the independent variable. b. what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? c. use the least squares method to develop the estimated regression equation (to 3 decimals). ŷ = + x d. for every additional car placed in service, estimate how much annual revenue will change. by $ e. fox rent a car has 11,000 cars in service. use the estimated regression equation developed in part (c) to predict annual revenue for fox rent a car. round your answer to nearest whole value. $ million hide feedback partially correct

How are interest rates calculated by financial institutions? financial institutions generally calculate interest as (1) interest or (.