The function d=4.9t^2 represents the distance d, in meters, that an object falls in t seconds due to Earth’s gravity. How long, in seconds, would it take for a cliff diver who is 90 meters above the water to reach the water below?

What is the equation in point slope form of the line that passes through the point (-1, -3) and has a slope of 4? y-1=4(x-3) or y+3=4(x+1)

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The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable