Rose is 13 and 3/4 and Kristen is 1 3/8 older than her which would be 15 1/8.
Jane is 1 1/5 older than THAT so the answer would be 81/5 or 16 1/5.
Hope this helps you out a little.
Financial statement is attached below.
no, x cannot be the same number. in all of them, x is 1. for one input there is another output. g is not a function