Question

Please Please Help. This is due monday and I have no idea how to do it. I need more than just answers, I need to see how to work it. Thanks, Tiff

Carbon dioxide CO2 is a greenhouse gas in the atmosphere that may raise average temperatures on Earth. The burning fossil fuels could be responsible for the increased levels of carbon dioxide. If current trends continue, future concentrations of atmospheric carbon dioxide in parts per million (ppm) could reach levels shown in the accompanying table. The CO2 concentration in the year 2000 was greater than it had been in 160,000 years.

Year 2000

Answer 1

A lot of words, no question.

Answer 2

The rest of it didn't show up. Hold on

Answer 3

Year 2000 2050 2100 2150 2200
ppm 364 467 600 769 987
a) Let x be in years, where x=0 corresponds to 2000, x=1 to 2001 and so on.
Find the values for C and a so that f(x)=Ca^x models the data.
b) Graph f and the data in the same viewing rectangle.

c) Use f(x) to estimate graphically the year when the Carbon dioxide Concentration will be double the preindustrial level of 280 ppm.

Answer 4

is the question complete?

Answer 5

Its a through c. That is it.

Answer 6

Start off by making a graph, where x, put the years 2000 at x=0, 2001 at x=1 etc

Answer 7

Ok I can do that.

Answer 8

The y or f(x) is ppm

Answer 9

What type of graph do I make?

Answer 10

do you have a graphing calculator?

Answer 11

No but I have the graph done. I just did a line graph.

Answer 12

What next.

Answer 13

Does your graph look like a like a "J"?

Answer 14

Draw a rough graph as we speak, do you have your graph?

Answer 15

Yes

Answer 16

Make a dot at 364-2000

Answer 17

I have plotted everything in the table..

Answer 18

Is that right?

Answer 19

Then draw the line, you are one third complete. Why are you stressing?

Answer 20

Part a) and c) that is what I'm stressing about. LOL

Answer 21

I drew the line.

Answer 22

As I'm reading this, they want you to do it in a calculator, you must have had some practice inputting in calculator.

Answer 23

I have to show all my work for part a) and c) and I don't get part a) at all.

Answer 24

Did you have practise inputting in calculator?

Answer 25

Sure I have before. I already took my test and did great on it. So I don't know what my deal is.

Answer 26

So set up the tables in a calculator.

Answer 27

c) is just asking you to look at the x value of your calculator and tell what year the ppms would hit 560

Answer 28

I don't have a graph caculator.

Answer 29

\[f(x)=560^{x}\]You can look at your tables and guess what year 560 is hovering over. For a more accurate answer solve for x algebraically.

Answer 30

I got it finished. Thank you for your help. :)