Answer :
Final answer:
The provided equations are variations of the mathematical formula d = rt (distance = rate * time). The coefficient of time (t) would be the speed and the constant terms are fixed distances. Additional information about John's speed and initial distance from the gas station would be needed to choose the correct equation.
Explanation:
The subject of the question is in relation to linear equations, specifically focusing on distance and time. In mathematical terms, distance travelled can be modelled using the formula d = rt, where 'd' represents distance, 'r' represents rate (speed), and 't' represents time. The options provided represent variations of this principle in the form of linear equations. It's important to understand that the rate or the speed at which John is moving is represented by the coefficient of 't' (time) in the equations, while the constant term added or subtracted represents a fixed distance (maybe an initial distance from the gas station, if the information is provided in the context). However, without any additional relevant information about John's speed or initial distance from the gas station, one cannot definitively choose the correct equation to represent the situation. It would be helpful to know John's speed and whether he had a head start, to provide a more accurate equation among the given options.
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