## anonymous one year ago https://gyazo.com/3eefb3027a5c180805855592bfb28d97 Thats the question

1. jim_thompson5910

Have you tried expanding out each expression? example: $\Large 2.7 \times 10^3 = 2,700$

2. anonymous

i tryed that...

3. jim_thompson5910

what did you get

4. anonymous

let me look at the question again

5. anonymous

its b

6. jim_thompson5910

why?

7. anonymous

you know scientific notation?

8. jim_thompson5910

yes I do

9. jim_thompson5910

what did you get when you converted from scientific notation to the full expanded number?

10. anonymous

100000000

11. jim_thompson5910

which one is that?

12. anonymous

10^8

13. jim_thompson5910

so what would 7.8 times 10^8 be equal to?

14. anonymous

xD i forgot how to convert .'s

15. jim_thompson5910

start with 7.8 then move the decimal point 8 times to the right (since the exponent over the 10 is 8)

16. anonymous

mhm

17. jim_thompson5910

do the same with the answer choices

18. jim_thompson5910

then see which is greater

19. anonymous

B.....

20. jim_thompson5910

Can you show me the expanded forms for each?

21. anonymous

-___- i know the answer is B

22. jim_thompson5910

I just want to make sure that it's not a complete guess

23. anonymous

its not :P