The controller of Carla Vista Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs. Month Total Maintenance Costs Total Machine Hours January $3,173 4,210 February 3,606 4,808 March 4,327 7,212 April 5,409 9,496 May 3,846 6,010 June 5,878 9,620
(a) Determine the variable-cost components using the high-low method. (Round variable cost to 2 decimal places e. g. 12.25.)
Variable cost per machine hour
(b) Determine the fixed cost components using the high-low method. (Round answer to 0 decimal places e. g. 2,520.)
Fixed costs

Total marketing effort is a term used to describe the critical decision factors that affect demand: price, advertising, distribution, and product quality. define the variable x to represent total marketing effort. a typical model that is used to predict demand as a function of total marketing effort is based on the power function: d = axb suppose that a is a positive number. different model forms result from varying the constant b. sketch the graphs of this model for b = 0, b = 1, 0< b< 1, b< 0, and b> 1. (we encourage you to use excel to do this.) what does each model tell you about the relationship between demand and marketing effort? what assumptions are implied? are they reasonable? how would you go about selecting the appropriate model?