Ron moss, a manager of waterworks, inc., was reviewing the water bills of a dog daycare and spa. he determined that its highest and lowest bills of $3,600 and $2,800 were incurred in the months of may and november, respectively. if 500 dogs were washed in may and 200 dogs were washed in november, what was the variable cost per dog associated with the company's water bill? (round your answer to the nearest cent.)

According to the map, which continent has the most countries with a low gdp level? which two countries have the highest gdp level?

Forecasting as a first step in the team’s decision making, it wants to forecast quarterly demand for each of the two types of containers for years 6 to 8. based on historical trends, demand is expected to continue to grow until year 8, after which it is expected to plateau. julie must select the appropriate forecasting method and estimate the likely forecast error. which method should she choose? why? using the method selected, forecast demand for years 6 to 8.

Arival company manufactures fuel tanks for cars using a different production technique. the total weekly cost (in dollars) of producing x tanks is given by c(x) = 10000 +90x - 0.04x2 find the marginal cost at a production level of 500 fuel tanks per week to approximate the cost of the 501st unit (round to the nearest 2 decimal places, if needed)