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SAT® Math

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Moderate

Road Trip

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SATMAT-KV1X1J

Jeremy's car can travel $23$ miles for each gallon of gas. He starts a trip with $15$ gallons of gas in the tank and averages $30$ miles per hour.

Which function models the number of gallons, $ G $, left in the tank as a function of the number of hours, $ t $, since he started driving?

A

$ G(t)=\cfrac { 15t }{ 23 } +30 $

B

$ G(t)=15-\cfrac { 30t }{ 23 } $

C

$ G(t)=\cfrac { 15-30t }{ 23 } $

D

$ G(t)=-\cfrac { 23t }{ 30 } +15 $