I’m having a little bit of trouble with my problem set

Hey There!I’m having a little bit of trouble with my problem set. So far the answers I have are: a) 1. 8%b) 15. 80%c) 18%d) 19. 57 %and for the last question I am totally stumped!Could anyone check my answers and help me out with the last question? Thanks!

I’m having a little bit of trouble with my problem set

Hey There!

I’m having a little bit of trouble with my problem set. So far the answers I have are:

a) 1.8%

b) 15.80%

c) 18%

d) 19.57 %

and for the last question I am totally stumped!

Could anyone check my answers and help me out with the last question? Thanks!