Question

Given the table (attached) create an exponential function that models the world population during the interval 1980-2015

Answer 1

This is supposed to be done without the forming of a regression line.

Answer 2

you want this in the form f(x)=ab^x?

Answer 3

Yes I believe so.

Answer 4

i wonder if we can do the x in terms of years since 1980

with 0 corresponding with 1980

Answer 5

That sounds good to me. I have tried similar a few times to no success, but am not sure if I just did it wrong.

Answer 6

then a would = 2,707,475,887

Answer 7

Ohh, I figured y would = 2,707,475,887

Answer 8

it would

Answer 9

in x = 0

Answer 10

Ok yep

Answer 11

\[f(0)=2707475887(b)^0\]
\[f(5)=2707475887(b)^5=3086150193\]

Answer 12

Ok that makes sense so far

Answer 13

\[b^5=1.1398624851354031652729544697142\]

Answer 14

So you just divided there?

Answer 15

ya

Answer 16

http://www.wolframalpha.com/input/?i=1.1398624851354031652729544697142^%281%2F5%29

Answer 17

lol i hate these numbers

Answer 18

so
b=1.02652727255223186275654039342229

Answer 19

i dunno if this is gonna work

Answer 20

lets see

Answer 21

Ok

Answer 22

ok not working

Answer 23

:(

Answer 24

maybe missing a step here

Answer 25

Ok

Answer 26

this may involve e

Answer 27

Noooooo :P

Answer 28

Ok e being that magic 2.7 number?

Answer 29

dunno and im to tired for this sorry for wasting ure time.

Answer 30

Ok thats fine :)