Explanation
Correct answer: B.
Choice B is correct. It's given that the equation gives the estimated amount of diesel , in gallons, that remains in the gas tank of the truck after being driven miles. Substituting for in the given equation yields , which is equivalent to , or . Therefore, the estimated amount of diesel that remains in the gas tank of the truck when is gallons.
Desmos solution:
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Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect. This is the estimated amount of diesel, in gallons, that will remain in the gas tank of the truck when , not when .
Choice C
Choice C is incorrect. This is the estimated amount of diesel, in gallons, that will remain in the gas tank of the truck when , not when .
Choice D
Choice D is incorrect. This is the estimated amount of diesel, in gallons, that will remain in the gas tank of the truck when , not when .