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In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

What is the definition of exponential decay?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?