You are the newly hired accountant of
7Eleven convenience store in Indang. Your task
is to analyze its revenue for the past 10 years of
it's operation. it's annual revenue R (in millions)
can be approximated by the function.
[tex]r(t) = 0.0001( - t {}^{4} + 12t {}^{3} - 77t {}^{7} + 600t + 13650 )[/tex]
when t is the number of years since the store opened.
a. What is the revenue of the store on it's 5th year operation?
b. In which year(s) was the revenue Php. 1.5 million?​