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Mathematics 11 Online
OpenStudy (anonymous):

Write a rational function that can be used to model the race, where the independent variable, r, represents the average speed in miles per hour and the dependent variable, t, represents the time in hours it takes to complete the race. How do r and t vary with each other? t = 500/r; inverse variation t = 500/r2; inverse exponential variation t = 500r2; exponential variation t = 500r; direct variation

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