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Hannibal lecter

Member

Registered: 2016-02-11

Posts: 392

annual sea level (function of time question)

Table 1.4 shows the average annual sea level, S, in meters, in Aberdeen, Scotland,8 as a function of time, t,
measured in years before 2008

Q) In what year was the average sea level 7.019 meters?
6.957 meters?
I found in book solution this answer :  Looking at the table, we see that the average annual sea level was 7.019 fifty years before 2008, or in the year 1958.
and the average sea level was 6.957 meters 125 years before 2008, or in 1883

but how is that I see on table is 25! and 2008-25 is = 1993
the solution is it's fifty years before 2008!
is there a mistake right?

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Wisdom is a tree which grows in the heart and fruits on the tongue

Bob

Administrator

Registered: 2010-06-20

Posts: 10,136

Re: annual sea level (function of time question)

hi,

Your second answer

the average sea level was 6.957 meters 125 years before 2008, or in 1883

  is correct.

The book answer

Looking at the table, we see that the average annual sea level was 7.019 fifty years before 2008, or in the year 1958.

This is wrong.  The t value for S = 7.019 is t = 25 not 50.

Sometimes book answers are wrong.  Maybe the question was changed but not the answer. Or perhaps the answerer just got his eyes crossed.

But it's not 1993 either!  Try doing 2008 - 25 again. 

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Hannibal lecter

Member

Registered: 2016-02-11

Posts: 392

Re: annual sea level (function of time question)

yes I mean 1983, I knew there is a mistake but wanted to make sure

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Wisdom is a tree which grows in the heart and fruits on the tongue