Can someone explain to me how they got the answer ?

User Generated

Pnyphyngbe1

Mathematics

Description

The following table shows the number, in millions, graduating from high school in the United States, in the given year.

t = YearN = Number graduating
19852.83
19872.65
19892.47
19912.29
c) Find the average rate per year during the period 1989 to 1991. (Round your answer to two decimal places.)
(No Response)  

-0.09

 million students per year

(d) Estimate the value of N(1994). (Round your answer to two decimal places.)

(No Response)  

2.02

 million students

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Explanation & Answer

Thank you for the opportunity to help you with your question!

to get -0.09  they subtracted the value for 1989 from  the one for 1991

2.29-2.47=- 0.19

Then you divide it by 2 to get the average

0.18/2

=-0.09


The second part they got 2.02 by subtracting the average for a year period of 3 years which is (-0.09 x 3)


= 2.29-0.18-0.09

=2.2

Please let me know if you need any clarification. I'm always happy to answer your questions.


Anonymous
Really great stuff, couldn't ask for more.

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