Question

Need help with logs

Answer 1

the question is in the attached file

Answer 2

when I plug 11 000 000 in to d i get an answer of 10.1...

Answer 3

and that is not the right answer

Answer 4

the answer is C.12.9 days btw

Answer 5

i just dont know how to get it

Answer 6

Having a look at it now, I'll see if I can help out

Answer 7

If the planet is 11,000,000km from the star then the value of d in the equation is 11 (d is distance in MILLIONS of km). It looks like that's where your issue is.
If you substitute d=10 into the equation you get logT=1.11 (roughly). Which means T=10^1.11=12.9

Answer 8

oh ok

Answer 9

Hope that helps

Answer 10

oh ok i get ty