Section 5.4 (cont.) 3) The rate of change of the length of the average hospital stay between 1980 and 1996 can be modeled by the equation where t is the number of years st t days per year when t t days per year when t () .. .. = −≤ < −+ ≤ ≤ 0028 023 0 100 0408 0 30833 10 16 since 1980. Determine the values of the following definite integrals and interpret your answers. a) std t() 010 ∫ b) stdt () 10 16 ∫ c) std t() 0 16 ∫ 4) Many businesses spend money each year on advertising in order to stimulate sales of their products. The data given in the table show the approximate increase in sales (in thousands of dollars) that an additional $100 spent on advertising, at various levels, can be expected to generate. a) Find a model for these data.b) Use the model in part a to determine a model for the total sales revenue as a function of theamount x spent on advertising.
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This note was uploaded on 05/28/2011 for the course MAC 2233 taught by Professor Royer during the Fall '08 term at FIU.