Concept explainers
Sales The rate of sales of your company’s Jackson Pollock Advanced Paint-by-Number sets can be modeled by
t months after their introduction. Find an expression for the total number of paint-by-number sets
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Finite Mathematics and Applied Calculus (MindTap Course List)
- Heart Disease In a certain country, the number of deaths due to heart disease decreased from 235 in one year to 221 in the next year. What percentage decrease in deaths due to heart disease does this represent?arrow_forwardDuring what time period would the broker advise buying if he thought 500 to 800 was an appropriate buy range? Example 2.10 Beginning in 2001, the price of gold was modeled approximately by G(t)=2551.18t dollars per ounce, where t is the time in years since the beginning of 2001.arrow_forwardDepreciation Once a new car is driven away from the dealer, it begins to lose value. Each year, a car loses 10% of its value. This means that each year the value of a car is 90% of the previous year’s value. If a new car was purchased for $20,000, the value at the end of the first year would be $20000(0.90) and the value of the car after the end of the second year would be $20000(0.90)2. Complete the table shown below. What will be the value of the car at the end of the eighth year? Simplify the expression, to show the value in dollars.arrow_forward
- LIFE SCIENCE APPLICATIONS APPLY IT Splenic Artery Resistance Blood flow to the fetal spleen is of research interest because several diseases are associated with increased resistance in the splenic artery the artery that goes to the spleen. Researchers have found that the index of splenic artery resistance in the fetus can be described by the function y=0.057x0.001x2, where x is the number of weeks of gestation. Source: American Journal of Obstetrics and Gynecology. a. At how many weeks is the splenic artery resistance a maximum? b. What is the maximum splenic artery resistance? c. At how many weeks is the splenic artery resistance equal to 0, according to this formula? Is your answer reasonable for this function? Explain.arrow_forwardMedical Literature It has been observed that there has been an increase in proportion of medical research papers that use the word novel in the title or abstract, and that this proportion can be accurately modeled by the function p(t)=0.001131e0.1268t, where t is the number of years since 1970. Source: Nature. a. Find p(40). b. If the phenomenon continues, estimate the year in which every medical article will contain the word novel in its title or abstract. c. Estimate the rate of increase in the proportion of medical papers using this word in the year 2010. d. Explain some factors that may be contributing to researchers using this word.arrow_forward
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