It's C.spider software purpose is to find/view web documents.
C. The user can select a cell in that field and click “collapse entire field” in the options tab. Is probably not right!
C- A graphic designer is the awnser
I added a decimal format to keep all decimals within the hundredths place. I also changed the calcTip method to void and the argument to a double. Void means the method doesn't return anything and changing bill to type double let's us pass numbers with decimals to the calcTip method. I hope this helps!