Çözüldü Function's Initial Value

https://i.ibb.co/qYH7msbx/SAT.png
12 Practice Tests for the SAT, 2015-2016
https://z-library.sk/book/3066055/ece543/12-practice-tests-for-the-sat-20152016.html
[Page 32 (62 in the pdf file), Question 4]

Test Solution: The statement "... 42,000 gallons of fuel at the beginning..." means f(0) = 42,000 ===> A is the only possible choice.

Classic Exam Solution:

https://i.ibb.co/JwGmStsQ/SAT-sol.png
[ Page 41 (71 in the pdf file) ]