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MARKET RESEARCH Trendex, a telephone survey company, has been hired to conduct a television-viewing poll among urban and suburban families in the Los Angeles area. The client has stipulated that a maximum of 1500 families is to be interviewed. At least 500 urban families must be interviewed, and at least half of the total number of families interviewed must be from the suburban area. For this service, Trendex will be paid $6000 plus $8 for each completed interview. From previous experience, Trendex has determined that it will incur an expense of $4.40 for each successful interview with an urban family and $5 for each successful interview with a suburban family. How many urban and suburban families should Trendex interview in order to maximize its profit?
A company produces very unusual CD's for which the variable cost is $12 per CD and the fixed costs are $25,000. They will sell the CD's for $98 each. Let x be the number of CD's produced.
Find the stationary points and determine their nature of the following function: f (x, y) = x3 + y2 - 3x + 4y + 2. Sketch the region of integration and evaluate the integral: 0∫2 0∫√(4-x^2) x2y dy dx.
To the equation in part (v), add an interaction between electricand educ. Is its co- efficient statistically significant? What happens to the coefficient on electric?
Find and interpret the marginal profit when four units are sold.
Find the vector equation of the line through the origin and perpendicular to the line given by r(t) = . (Recall: Two lines are perpendicular if they intersect at a right angle.)
Use a definite integral to find an expression that represents the area of the region between the given curve and the x-axis on the interval[0, b].
For this assignment you will be required to do some work that will not be included in the discussion. First, you need to graph your functions so you can clearly describe the graphs in your discussion. Your graph itself is not required in your post, a..
A closed box with a square base has to have a volume of 19,000 cubic inches. Find a function for the surface area of the box.
A ferritin test is a popular test to measure a person current iron stores. In women, ferritin is approximately normally distributed with a mean of 89mg/mL and a standard deviation of 23 ng/mL. What is the probability that a woman has a ferritin value..
a nature photographer wishes to photograph a 25 m -tall tree from a distance of 63 m. what focal-length lens should be
Math: Linear Transformation of the Space of Polynomials, Which of the following is a linear transformation T of the space of polynomials? Circle the letters corresponding to correct answers.
Global warming is related to increased greenhouse gas emissions. Aren"t they the same? No Separate issues, separate pollutants. How does this relate to the greenhouse effect?
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