Stanley drove his car on a business trip. when he left, the mileage was 840 miles, and when he returned, the mileage was 1,200 miles. the car used 12 gallons of gasoline for this trip. carla made the same trip as stanley, but her car used only 10 gallons of gasoline.

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This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?