Question

Four months ago, Cynthia signed up to receive email notifications to remind her to change her contact lenses,

Cynthia's first email arrived 9 days after she set up the notifications, and her second email arrived 14 days after
the first. Emails continued to arrive every 14 days.
Assuming n is a positive integer, which function gives the number of days, c(n), after Cynthia set up the
notifications that her nth email arrived?

Answer 1

i think the answer is c

Answer 2

I think 14n + 9

Explanation:

since she got her first email in 9 days and got her second email 14 days later, and it continues to appear every 14 days.

so I think it must be 14n + 9