Question

Distance between New York and San Francisco is 2539.79 MI a train travels at an average speed of 90 miles per hour what equation shows the relationship between distance traveled (Dl speed (s) and time taken (t)

Answer 1

D = s*t . . . . . . . distance is the product of speed and time

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If you want to know the time it takes to get from New York to San Francisco, you can substitute the given values and solve for t.
2539.79 = 90t
2539.79/90 = t ≈ 28.2199 . . . . hours