What is the fourth persons time and, with these numbers it should be anything lower than 9.75.
Answer: 90 U.S. dollars
If 60 U.S. dollars represwnt 50 euros, we will add.
80 euros represent 90 dollars because: there are 10 more euros than dollars.
Hope this helps!
Answer is the second one. an= -0.5n2-n+9