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One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is the formula below. N = 0.05+² -0.42t + 12.33 Here N is the enrollment in millions of students, t is the time in years since 1986, and the model is relevant from 1986 to 1996. (a) Use functional notation to express the number of students enrolled in U.S. public high schools in the year 1988. N(2 Calculate that value. (Round your answer to one decimal place.) 11.69 million students (b) Explain in practical terms what N(5) means. N(9) is the number (in millions) of students enrolled in public high schools in the U.S. in the year 1995 (because that is 9 years after 1986). Score: 0.14 out of 0.14 Comment: Calculate N(5). (Round your answer to one decimal place.) 11.48 million students (c) In what year was the enrollment the smallest? 1991

One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is the formula below. N = 0.05+² -0.42t + 12.33 Here N is the enrollment in millions of students, t is the time in years since 1986, and the model is relevant from 1986 to 1996. (a) Use functional notation to express the number of students enrolled in U.S. public high schools in the year 1988. N(2 Calculate that value. (Round your answer to one decimal place.) 11.69 million students (b) Explain in practical terms what N(5) means. N(9) is the number (in millions) of students enrolled in public high schools in the U.S. in the year 1995 (because that is 9 years after 1986). Score: 0.14 out of 0.14 Comment: Calculate N(5). (Round your answer to one decimal place.) 11.48 million students (c) In what year was the enrollment the smallest? 1991

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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(c) In what year was the enrollment the smallest?

One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is the formula below. N = 0.05+² -0.42t + 12.33 Here N is the enrollment in millions of students, it is the time in years since 1986, and the model is relevant from 1986 to 1996. (a) Use functional notation to express the number of students enrolled in U.S. public high schools in the year 1988. N(2 :) Calculate that value. (Round your answer to one decimal place.) 11.69 million students (b) Explain in practical terms what M(5) means. N(9) is the number (in millions) of students enrolled in public high schools in the U.S. in the year 1995 (because that is 9 years after 1986). Score: 0.14 out of 0.14 Comment: Calculate N(5). (Round your answer to one decimal place.) 11.48 ✔ million students (c) In what year was the enrollment the smallest? 1991 x
Transcribed Image Text:One model for the number of students enrolled in U.S. public high schools as a function of time since 1986 is the formula below. N = 0.05+² -0.42t + 12.33 Here N is the enrollment in millions of students, it is the time in years since 1986, and the model is relevant from 1986 to 1996. (a) Use functional notation to express the number of students enrolled in U.S. public high schools in the year 1988. N(2 :) Calculate that value. (Round your answer to one decimal place.) 11.69 million students (b) Explain in practical terms what M(5) means. N(9) is the number (in millions) of students enrolled in public high schools in the U.S. in the year 1995 (because that is 9 years after 1986). Score: 0.14 out of 0.14 Comment: Calculate N(5). (Round your answer to one decimal place.) 11.48 ✔ million students (c) In what year was the enrollment the smallest? 1991 x
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