218219
218219
15.12.2021 • 
Mathematics

For 12 years that a grocery store has been open. Its annual revenue (in million pesos) can be modeled by the function R=0.0001(-t4+12t3-77+2 +600t +13,650)
when t is the number of years the store is open. In which year was the revenue 1.5 million?
A. 4th and 5th
B. 3rd and 6th
C. 3rd and 9th
D. 11th and 12th

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