the percentages of people in a country who say they are happy are shown in the table for various year. Let f(t) be the percentage of people in a country who say they are very happy at t year since 1970. complete part a-d below. year                      percentage 1972                      34 1980                      36 1990                       43 2000                       41 2010                       29 a. find a quadratic equation of t in vertex form. b. Find ( 47) and what does it mean in this situation

Algebra and Trigonometry (6th Edition)
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Author:Robert F. Blitzer
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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the percentages of people in a country who say they are happy are shown in the table for various year. Let f(t) be the percentage of people in a country who say they are very happy at t year since 1970. complete part a-d below.

year                      percentage

1972                      34

1980                      36

1990                       43

2000                       41

2010                       29

a. find a quadratic equation of t in vertex form.

b. Find ( 47) and what does it mean in this situation

c. find when f(t)=24 and what does it mean

d. what is the vertex of the model? and what does it mean

 

 

 

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