Answer to Question #163777 in Algebra for Yovana Gil

Question

The number of Facebook friends one makes after arriving on campus is described by the following function.F(d)=2d,where d is days.Which of the following choices finds f(7)

Answer 1

$F(d)=2d$ means that the number that represents the quantity of friends is two times greater than the number that represents the day. So, at the seventh day, the number of friends is

$$F(7)=2·7=14.$$