Sonja and dante are hiking up the side of a mountain. they reach the peak of 727 feet at the end of the day. if the mountain forms a 77° angle with the ground, what is the distance they hiked? round your answer to the nearest foot.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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