The star canopus has an aparent magnitude of -0.72 and an absolute magnitude of -3.1
(a)How far away is Canopus in parsecs?
m-M = 5log(d/10)
-0.72-(-3.1) = 5log(d/10)
5log(d/10) = 2.38
then it says (d/10) = 2.99 how did they get that???? i know its a stupid question but can anyone...