Z00053. My wife has 3 email accounts (Yahoo, gm–ail, and Work email). Her yahoo account is her junk email account. Currently, she has 15,000 unread emails in her yahoo account, and she receives an additional 30 emails each day. Her gm–ail account has 5 unread emails, and receives 40 new emails a day. Her work email account has 10 unread emails, and it receives 60 new emails a day.
If no emails are read, write equations that describe the number of unread emails in each account. Meaning, do the following.
a. Using Y(x) as the number of unread Yahoo emails at day x, find a function
Y(x) =
b. Using G(x) as the number of unread gm–ail emails at day x, find a function
G(x)=
c. Using W(x) as the number of unread Work emails at day x, find a function
W(x) =
i. How long until her Work email has as many unread emails as her Yahoo account? And how many emails are in each account at that time? (Use a matrix)